To designate the facility of the United States Postal Service located at 1157 West Mission Avenue in Escondido, California, as the "Captain E. Royce Williams Post Office Building".

HR 4283 designates the U.S. Postal Service facility at 1157 West Mission Avenue in Escondido, California, as the "Captain E. Royce Williams Post Office Building." The bill updates all official references (laws, maps, documents) to this specific post office to use the new name. This is a ceremonial naming bill with no policy changes or direct impact on citizens' rights or obligations. It affects only the postal facility's official designation and related records.