Gregory Rosen

Mr. Rosen is an Assistant United States Attorney for the District of Columbia, within the US Department of Justice. During his tenure with the office, Mr. Rosen has served in several trial sections, helping to litigate and manage complex cases, ranging from narcotics trafficking, firearms trafficking, violent crimes, fraud, and sexual exploitation crimes.

Mr. Rosen last served as the Chief of the Capitol Siege Section, Breach and Assault Unit, devoted to prosecuting crimes arising out of the January 6, 2021 breach of the US Capitol. Before serving in that role, he also served as the Chief of the Federal Major Crimes Section, and the Deputy Chief of the Federal Major Crimes and Violent Crimes and Narcotics Trafficking Section of the office. As a supervisor, Mr. Rosen has managed hundreds of prosecutors and legal support personnel, helping to streamline prosecutorial efforts within the U.S. Attorney’s Office.

Mr. Rosen has previously served as a liaison and coordinator for firearms-related crimes, opioid-related investigations, and helped create training programs throughout the Criminal Division. While with the US Attorney’s Office, he has also personally tried approximately twenty-five jury trials to verdict, including large-scale narcotics trafficking cases, homicide, obstruction of justice, and a variety of other violent crimes.

Before joining the office, Mr. Rosen also served as an Assistant Commonwealth’s Attorney in Loudoun County, Virginia, helping to prosecute cases ranging from minor traffic infractions to murder. Throughout his tenure in Loudoun, he tried approximately thirty jury trials to verdict.

Mr. Rosen graduated from The George Washington University in 2008, with a Bachelor of Arts in History, and from The George Washington University Law School in 2011, with a Juris Doctor.