He served as a National Security Council Director for Iraq in the Bush Administration, and as a White House Fellow in the Office of the United States Trade Representative during the Clinton Administration. His other military assignments include staff and leadership positions in Germany, California, Kansas, Kentucky, New York, and Texas. He is a veteran of three combat tours in Iraq to include being the Task Force 2-37 M1A1 Abrams Tank Battalion Commander in Operation Iraqi Freedom from 2006-2007. Prior to joining Citi, Tien was a combat arms officer for 24 years in the active duty U.S. Since 2011, Tien has been a Citigroup managing director. John Tien previously served in the Obama Administration as the National Security Council Senior Director for Afghanistan and Pakistan from 2009-2011. Customs and Border Protection, Jonathan Meyer for General Counsel, and Robert Silvers for Under Secretary for Strategy, Policy, and Plans. Department of Homeland Security John Tien for Deputy Secretary, Jen Easterly for Director of Cybersecurity & Infrastructure Security Agency, Ur Jaddou for Director of United States Citizenship and Immigration Services, Chris Magnus for Commissioner of U.S. WASHINGTON – Today, President Joe Biden announced his intent to nominate key leadership for the U.S. Get Involved Show submenu for “Get Involved””.

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