Brian Nelson is the U.S. Department of the Treasury’s Under Secretary for Terrorism and Financial Intelligence. Prior to joining Treasury, Brian was the Chief Legal Officer at LA28, the organizing committee for the 2028 Olympic and Paralympic Games in Los Angeles. His previous government service includes roles as a senior policy advisor, policy chief, and general counsel in the California Department of Justice, where he led efforts to enforce and reform financial regulations in the aftermath of the national foreclosure crisis in the late 2000s.