Office Home Office Home About Us HomeBureaus & Offices > Bureau of Political-Military Affairs ...Office of Congressional and Public Affairs hide Office of Congressional and Public Affairs Our Mission The Office of Congressional and Public Affairs (CPA) is responsible for facilitating effective communication and interaction between the Assistant Secretary and the staff of the Bureau of Political-Military Affairs and the Congress, foreign and domestic media, and the general public. CPA is responsible for managing the PM Bureau’s congressional affairs, public affairs, and public diplomacy functions.