One Flag for All Act

This bill prohibits displaying any flag other than the U.S. flag on the exterior of public buildings or in their hallways. It directly affects all federal, state, and local government buildings, including courthouses, libraries, and military installations. Exceptions allow specific flags, such as POW/MIA flags, visiting diplomats' national flags, state flags for congressional offices, military unit flags, tribal flags, and local jurisdiction flags. The bill is procedural, focusing solely on flag display rules without altering other policies.