Angela Walker, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela was a Senior Attorney with the Firearms and Explosives Law Division of the Bureau of Alcohol, Tobacco, Firearms and Explosives. Prior to that role, she served as an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Arizona for over sixteen years, focusing on prosecution of violent offenses and weapons trafficking. Angela also prosecuted a wide variety of other federal offenses, served in the Office’s Civil Division, and handled a significant number of appellate matters.

Angela received her undergraduate degree from the University of Wisconsin, and her juris doctorate from the University of Arizona James E. Rogers College of Law. Following law school, Angela served as a law clerk and practiced as a Deputy County Attorney in the Special Victims Unit of the Pima County Attorney’s Office for three years. She was an adjunct professor at the University of Arizona James E. Rogers College of Law for seven years, where she taught advanced criminal procedure. She has also organized and presented at numerous Continuing Legal Education courses, judicial conferences, law enforcement training programs, and other legal seminars.

Peter Madsen, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, has been on the staff of the U.S. Sentencing Commission, Washington, D.C. since April 2015.

Prior to coming to the U.S. Sentencing Commission, Pete was a U.S. Probation Officer in the District of Minnesota for eight years. He also worked for two and a half years in in the Northern District of Texas and one year in the Southern District of Ohio.

Pete graduated from the University of Minnesota-Duluth with a Bachelor of Arts degree in Criminology and Sociology, and from Nova Southeastern University with a Master of Science degree in Criminal Justice.

Angela Miller, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela worked in the Department of Justice for over 20 years, both in the Civil Rights Division’s and the Criminal Division’s Appellate Sections, where she focused on criminal appeals, and most recently in the Civil Rights Division’s Criminal Section, where she advised on criminal civil rights prosecutions.

Angela received her undergraduate degree from the College of William and Mary and a graduate degree from George Washington University. She graduated summa cum laude from George Mason University School of Law, where she is an Adjunct Professor and coteaches a Civil Rights Prosecutions course. Following law school, she served as a law clerk to the Honorable David B. Sentelle of the U.S. Court of Appeals for the District of Columbia Circuit.

Jessica Collins, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2023. Before coming to the Commission, Jessica was an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Maryland, where she served as the Deputy Chief of the Southern Division. Jessica was also a Trial Attorney with the Fraud Section, Criminal Division, of the U.S. Department of Justice and worked as an attorney in private practice. Since coming to the Commission, Jessica has trained thousands of practitioners on the Sentencing Guidelines and served as the chair of a policy team on Firearms.

Jessica received her undergraduate degree from Tulane University. She graduated magna cum laude from New York University School of Law. Following law school, Jessica served as a law clerk to the Honorable Henry F. Floyd of the U.S. Court of Appeals for the Fourth Circuit, as well as to the Honorable J. Frederick Motz and Honorable Catherine B. Blake of the U.S. District Court for the District of Maryland.

After graduating from Columbia University School of Law in 1992, Brent clerked for Fifth Circuit Judge Carolyn King and then represented several dozens of death row inmates in Texas and Florida in their direct and post-conviction appeals. From 1996 to 2009, he was an Assistant Federal Public Defender in Houston, Texas, where he handled both trials and appeals, including arguing a case before the Supreme Court of the United States in 2008. From 2009 to 2019, he was the deputy staff director of the United States Sentencing Commission in Washington, D.C. Since 2019, Brent has practiced civil, criminal, and immigration law, primarily in Maryland and Texas, and is a consultant to other attorneys in their federal criminal cases. He also is a practitioner in residence at Penn State Dickinson Law and an adjunct law professor at American University in Washington, D.C. He regularly teaches several courses per year. Brent is the author of three books, all published by the National Institute for Trial Advocacy, and many law review articles and book chapters. He was elected to the American Law Institute in 2010.

Lori Baker, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, joined the staff of the U.S. Sentencing Commission in 2020. She previously worked as a U.S. Probation Officer in the Middle District of Pennsylvania for over 20 years, including time spent as both a Sentencing Guideline Specialist and Supervisor. Although the majority of her career focused on the preparation of presentence investigation reports, her experience also includes pretrial services and post-conviction.

Lori enjoys working with those who are newer to federal sentencing including U.S. Probation Officers attending the Initial Probation and Pretrial Training Academy in Charleston, South Carolina. She uses her own experiences to identify concepts which are easily misunderstood and focuses her training efforts on these topics. Lori is particularly passionate about teaching the proper application of guidelines pertaining to sex offenses.

Lori holds a Bachelor of Science degree in Administration of Justice from the Pennsylvania State University and a Master of Science degree in Administration of Justice from Shippensburg University.

Peter Madsen, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, has been on the staff of the U.S. Sentencing Commission, Washington, D.C. since April 2015.

Prior to coming to the U.S. Sentencing Commission, Pete was a U.S. Probation Officer in the District of Minnesota for eight years. He also worked for two and a half years in in the Northern District of Texas and one year in the Southern District of Ohio.

Pete graduated from the University of Minnesota-Duluth with a Bachelor of Arts degree in Criminology and Sociology, and from Nova Southeastern University with a Master of Science degree in Criminal Justice.

Peter Madsen, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, has been on the staff of the U.S. Sentencing Commission, Washington, D.C. since April 2015.

Prior to coming to the U.S. Sentencing Commission, Pete was a U.S. Probation Officer in the District of Minnesota for eight years. He also worked for two and a half years in in the Northern District of Texas and one year in the Southern District of Ohio.

Pete graduated from the University of Minnesota-Duluth with a Bachelor of Arts degree in Criminology and Sociology, and from Nova Southeastern University with a Master of Science degree in Criminal Justice.

Jessica Collins, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2023. Before coming to the Commission, Jessica was an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Maryland, where she served as the Deputy Chief of the Southern Division. Jessica was also a Trial Attorney with the Fraud Section, Criminal Division, of the U.S. Department of Justice and worked as an attorney in private practice. Since coming to the Commission, Jessica has trained thousands of practitioners on the Sentencing Guidelines and served as the chair of a policy team on Firearms.

Jessica received her undergraduate degree from Tulane University. She graduated magna cum laude from New York University School of Law. Following law school, Jessica served as a law clerk to the Honorable Henry F. Floyd of the U.S. Court of Appeals for the Fourth Circuit, as well as to the Honorable J. Frederick Motz and Honorable Catherine B. Blake of the U.S. District Court for the District of Maryland.

Angela Miller, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela worked in the Department of Justice for over 20 years, both in the Civil Rights Division’s and the Criminal Division’s Appellate Sections, where she focused on criminal appeals, and most recently in the Civil Rights Division’s Criminal Section, where she advised on criminal civil rights prosecutions.

Angela received her undergraduate degree from the College of William and Mary and a graduate degree from George Washington University. She graduated summa cum laude from George Mason University School of Law, where she is an Adjunct Professor and coteaches a Civil Rights Prosecutions course. Following law school, she served as a law clerk to the Honorable David B. Sentelle of the U.S. Court of Appeals for the District of Columbia Circuit.

Angela Walker, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela was a Senior Attorney with the Firearms and Explosives Law Division of the Bureau of Alcohol, Tobacco, Firearms and Explosives. Prior to that role, she served as an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Arizona for over sixteen years, focusing on prosecution of violent offenses and weapons trafficking. Angela also prosecuted a wide variety of other federal offenses, served in the Office’s Civil Division, and handled a significant number of appellate matters.

Angela received her undergraduate degree from the University of Wisconsin, and her juris doctorate from the University of Arizona James E. Rogers College of Law. Following law school, Angela served as a law clerk and practiced as a Deputy County Attorney in the Special Victims Unit of the Pima County Attorney’s Office for three years. She was an adjunct professor at the University of Arizona James E. Rogers College of Law for seven years, where she taught advanced criminal procedure. She has also organized and presented at numerous Continuing Legal Education courses, judicial conferences, law enforcement training programs, and other legal seminars.

Jessica Collins, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2023. Before coming to the Commission, Jessica was an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Maryland, where she served as the Deputy Chief of the Southern Division. Jessica was also a Trial Attorney with the Fraud Section, Criminal Division, of the U.S. Department of Justice and worked as an attorney in private practice. Since coming to the Commission, Jessica has trained thousands of practitioners on the Sentencing Guidelines and served as the chair of a policy team on Firearms.

Jessica received her undergraduate degree from Tulane University. She graduated magna cum laude from New York University School of Law. Following law school, Jessica served as a law clerk to the Honorable Henry F. Floyd of the U.S. Court of Appeals for the Fourth Circuit, as well as to the Honorable J. Frederick Motz and Honorable Catherine B. Blake of the U.S. District Court for the District of Maryland.

Angela Miller, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela worked in the Department of Justice for over 20 years, both in the Civil Rights Division’s and the Criminal Division’s Appellate Sections, where she focused on criminal appeals, and most recently in the Civil Rights Division’s Criminal Section, where she advised on criminal civil rights prosecutions.

Angela received her undergraduate degree from the College of William and Mary and a graduate degree from George Washington University. She graduated summa cum laude from George Mason University School of Law, where she is an Adjunct Professor and coteaches a Civil Rights Prosecutions course. Following law school, she served as a law clerk to the Honorable David B. Sentelle of the U.S. Court of Appeals for the District of Columbia Circuit.

Mary M. Nerino, Helpline Specialist in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2024. 

Before coming to the Commission, Mary was an Assistant Federal Defender for the District of Vermont and a private criminal defense attorney in Northern Virginia, focusing her practice on trial and sentencing advocacy. In her pre-law life, Mary taught second grade in the DC public school system. At the Commission, Mary spends her days answering questions from attorneys, probation officers, law clerks, and judges about correct Guidelines application. She particularly enjoys unpacking thorny application issues to help her callers with practical Guidelines application in their real-life cases.

Mary holds a Bachelor of Arts in Sociology from The Pennsylvania State University and a Juris Doctor from the Washington and Lee University School of Law.

Mary M. Nerino, Helpline Specialist in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2024. 

Before coming to the Commission, Mary was an Assistant Federal Defender for the District of Vermont and a private criminal defense attorney in Northern Virginia, focusing her practice on trial and sentencing advocacy. In her pre-law life, Mary taught second grade in the DC public school system. At the Commission, Mary spends her days answering questions from attorneys, probation officers, law clerks, and judges about correct Guidelines application. She particularly enjoys unpacking thorny application issues to help her callers with practical Guidelines application in their real-life cases.

Mary holds a Bachelor of Arts in Sociology from The Pennsylvania State University and a Juris Doctor from the Washington and Lee University School of Law.

Jennifer Dukes, Senior Public Affairs Specialist in the Office of the Legislative and Public Affairs, joined the staff of the U.S. Sentencing Commission in 2005. Jenn worked as a Research Associate in the Office of Research and Data for eight years before joining the Commission's Public Affairs office. She specializes in strategic communication, designing print and digital products that serve a diverse audience.

Jenn is a graduate of the University of Florida with a Bachelor of Arts degree in Political Science and holds a Master of Professional Studies degree in Publishing with a concentration in Technology and Design from The George Washington University.

Lori Baker, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, joined the staff of the U.S. Sentencing Commission in 2020. She previously worked as a U.S. Probation Officer in the Middle District of Pennsylvania for over 20 years, including time spent as both a Sentencing Guideline Specialist and Supervisor. Although the majority of her career focused on the preparation of presentence investigation reports, her experience also includes pretrial services and post-conviction.

Lori enjoys working with those who are newer to federal sentencing including U.S. Probation Officers attending the Initial Probation and Pretrial Training Academy in Charleston, South Carolina. She uses her own experiences to identify concepts which are easily misunderstood and focuses her training efforts on these topics. Lori is particularly passionate about teaching the proper application of guidelines pertaining to sex offenses.

Lori holds a Bachelor of Science degree in Administration of Justice from the Pennsylvania State University and a Master of Science degree in Administration of Justice from Shippensburg University.

Alan Dorhoffer is the Director of the Office of Education and Sentencing Practice and has worked at the Commission for close to 30 years. He has conducted hundreds of training programs for judges, attorneys, law clerks, probation officers, and federal bar associations on federal sentencing. Alan has also conducted numerous webcasts and broadcasts on the Federal Judicial Training Network (FJTN). During his time at the Commission, Alan has chaired policy teams on Sex Offenses, Criminal History, and Firearms, and been a member of several other teams. Alan specializes in analyzing Supreme Court and appellate court decisions interpreting the federal sentencing issues, and in presenting complex legal concepts in terms guideline users can readily understand.

Alan has been an Adjunct Professor at the George Mason School of Law, and was law clerk to the Honorable Edmund A. Sargus, U.S. District Judge, Southern District of Ohio, in Columbus. Alan is a graduate of Binghamton University and the George Washington University School of Law.

Angela Miller, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela worked in the Department of Justice for over 20 years, both in the Civil Rights Division’s and the Criminal Division’s Appellate Sections, where she focused on criminal appeals, and most recently in the Civil Rights Division’s Criminal Section, where she advised on criminal civil rights prosecutions.

Angela received her undergraduate degree from the College of William and Mary and a graduate degree from George Washington University. She graduated summa cum laude from George Mason University School of Law, where she is an Adjunct Professor and coteaches a Civil Rights Prosecutions course. Following law school, she served as a law clerk to the Honorable David B. Sentelle of the U.S. Court of Appeals for the District of Columbia Circuit.

Peter Madsen, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, has been on the staff of the U.S. Sentencing Commission, Washington, D.C. since April 2015.

Prior to coming to the U.S. Sentencing Commission, Pete was a U.S. Probation Officer in the District of Minnesota for eight years. He also worked for two and a half years in in the Northern District of Texas and one year in the Southern District of Ohio.

Pete graduated from the University of Minnesota-Duluth with a Bachelor of Arts degree in Criminology and Sociology, and from Nova Southeastern University with a Master of Science degree in Criminal Justice.

Angela Walker, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela was a Senior Attorney with the Firearms and Explosives Law Division of the Bureau of Alcohol, Tobacco, Firearms and Explosives. Prior to that role, she served as an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Arizona for over sixteen years, focusing on prosecution of violent offenses and weapons trafficking. Angela also prosecuted a wide variety of other federal offenses, served in the Office’s Civil Division, and handled a significant number of appellate matters.

Angela received her undergraduate degree from the University of Wisconsin, and her juris doctorate from the University of Arizona James E. Rogers College of Law. Following law school, Angela served as a law clerk and practiced as a Deputy County Attorney in the Special Victims Unit of the Pima County Attorney’s Office for three years. She was an adjunct professor at the University of Arizona James E. Rogers College of Law for seven years, where she taught advanced criminal procedure. She has also organized and presented at numerous Continuing Legal Education courses, judicial conferences, law enforcement training programs, and other legal seminars.

Lori Baker, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, joined the staff of the U.S. Sentencing Commission in 2020. She previously worked as a U.S. Probation Officer in the Middle District of Pennsylvania for over 20 years, including time spent as both a Sentencing Guideline Specialist and Supervisor. Although the majority of her career focused on the preparation of presentence investigation reports, her experience also includes pretrial services and post-conviction.

Lori enjoys working with those who are newer to federal sentencing including U.S. Probation Officers attending the Initial Probation and Pretrial Training Academy in Charleston, South Carolina. She uses her own experiences to identify concepts which are easily misunderstood and focuses her training efforts on these topics. Lori is particularly passionate about teaching the proper application of guidelines pertaining to sex offenses.

Lori holds a Bachelor of Science degree in Administration of Justice from the Pennsylvania State University and a Master of Science degree in Administration of Justice from Shippensburg University.

Alan Dorhoffer is the Director of the Office of Education and Sentencing Practice and has worked at the Commission for close to 30 years. He has conducted hundreds of training programs for judges, attorneys, law clerks, probation officers, and federal bar associations on federal sentencing. Alan has also conducted numerous webcasts and broadcasts on the Federal Judicial Training Network (FJTN). During his time at the Commission, Alan has chaired policy teams on Sex Offenses, Criminal History, and Firearms, and been a member of several other teams. Alan specializes in analyzing Supreme Court and appellate court decisions interpreting the federal sentencing issues, and in presenting complex legal concepts in terms guideline users can readily understand.

Alan has been an Adjunct Professor at the George Mason School of Law, and was law clerk to the Honorable Edmund A. Sargus, U.S. District Judge, Southern District of Ohio, in Columbus. Alan is a graduate of Binghamton University and the George Washington University School of Law.

Angela Miller, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2025. Before coming to the Commission, Angela worked in the Department of Justice for over 20 years, both in the Civil Rights Division’s and the Criminal Division’s Appellate Sections, where she focused on criminal appeals, and most recently in the Civil Rights Division’s Criminal Section, where she advised on criminal civil rights prosecutions.

Angela received her undergraduate degree from the College of William and Mary and a graduate degree from George Washington University. She graduated summa cum laude from George Mason University School of Law, where she is an Adjunct Professor and coteaches a Civil Rights Prosecutions course. Following law school, she served as a law clerk to the Honorable David B. Sentelle of the U.S. Court of Appeals for the District of Columbia Circuit.

Peter Madsen, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, has been on the staff of the U.S. Sentencing Commission, Washington, D.C. since April 2015.

Prior to coming to the U.S. Sentencing Commission, Pete was a U.S. Probation Officer in the District of Minnesota for eight years. He also worked for two and a half years in in the Northern District of Texas and one year in the Southern District of Ohio.

Pete graduated from the University of Minnesota-Duluth with a Bachelor of Arts degree in Criminology and Sociology, and from Nova Southeastern University with a Master of Science degree in Criminal Justice.

Ross Thomas, Deputy Director of the Office of Education and Sentencing Practice, joined the Commission in 2020. During his time at the Commission, Ross has been a member of policy teams on Compassionate Release, Career Offender, Criminal History, and Drug Trafficking. He has co-authored two Commission Reports: Recidivism and Federal Bureau of Prisons Programs: Drug Program Participants Released in 2010 (May 2022) and Recidivism and Federal Bureau of Prisons Programs: Vocational Program Participants Released in 2010 (June 2022).

Before coming to the Commission, Ross worked for the Federal Public Defender's Office, District of Connecticut, both as an Assistant Federal Public Defender and a Research and Writing Attorney. Ross also served as a law clerk to the Honorable Vanessa L. Bryant, United States District Judge, District of Connecticut, and as a staff attorney for the United States Court of Appeals for the Second Circuit.

Ross received his undergraduate degree from Columbia University and graduated cum laude from Cornell Law School.

Peter Madsen, Senior Education and Sentencing Practice Specialist in the Office of Education and Sentencing Practice, has been on the staff of the U.S. Sentencing Commission, Washington, D.C. since April 2015.

Prior to coming to the U.S. Sentencing Commission, Pete was a U.S. Probation Officer in the District of Minnesota for eight years. He also worked for two and a half years in in the Northern District of Texas and one year in the Southern District of Ohio.

Pete graduated from the University of Minnesota-Duluth with a Bachelor of Arts degree in Criminology and Sociology, and from Nova Southeastern University with a Master of Science degree in Criminal Justice.

Alan Dorhoffer is the Director of the Office of Education and Sentencing Practice and has worked at the Commission for close to 30 years. He has conducted hundreds of training programs for judges, attorneys, law clerks, probation officers, and federal bar associations on federal sentencing. Alan has also conducted numerous webcasts and broadcasts on the Federal Judicial Training Network (FJTN). During his time at the Commission, Alan has chaired policy teams on Sex Offenses, Criminal History, and Firearms, and been a member of several other teams. Alan specializes in analyzing Supreme Court and appellate court decisions interpreting the federal sentencing issues, and in presenting complex legal concepts in terms guideline users can readily understand.

Alan has been an Adjunct Professor at the George Mason School of Law, and was law clerk to the Honorable Edmund A. Sargus, U.S. District Judge, Southern District of Ohio, in Columbus. Alan is a graduate of Binghamton University and the George Washington University School of Law.

Jessica Collins, Senior Attorney in the Office of Education and Sentencing Practice, joined the U.S. Sentencing Commission in 2023. Before coming to the Commission, Jessica was an Assistant U.S. Attorney with the U.S. Attorney’s Office for the District of Maryland, where she served as the Deputy Chief of the Southern Division. Jessica was also a Trial Attorney with the Fraud Section, Criminal Division, of the U.S. Department of Justice and worked as an attorney in private practice. Since coming to the Commission, Jessica has trained thousands of practitioners on the Sentencing Guidelines and served as the chair of a policy team on Firearms.

Jessica received her undergraduate degree from Tulane University. She graduated magna cum laude from New York University School of Law. Following law school, Jessica served as a law clerk to the Honorable Henry F. Floyd of the U.S. Court of Appeals for the Fourth Circuit, as well as to the Honorable J. Frederick Motz and Honorable Catherine B. Blake of the U.S. District Court for the District of Maryland.