- Gender:Male
- Date of Birth:November 21, 1961
- Party:Democratic
- Birth State:Maryland
- Education:United States Military Academy (no degree awarded); Harvard University (B.A., J.D.)
Term:
- January 3, 2023 – present
- Selection method: Public Election
- Next election: 2026
- Term length: Four-year terms
- Term limits: None
Career track:
- Active-duty Aviation Officer (Captain), U.S. Army (1984–1989)
- Colonel and Judge Advocate General, Army Reserve (1990- c. 2020)
- Law Clerk for Chief Judge Eugene Sullivan of the U.S. Court of Appeals for the Armed Forces (1992–1994)
- Wilmer Cutler Pickering (now WilmerHale) (1994–1999)
- Member, Maryland House of Delegates (25th District) (1999–2007)
- Lieutenant Governor of Maryland (2007–2015)
- U.S. Representative for Maryland's 4th Congressional District (2017–2023)
