To designate the facility of the United States Postal Service located at 220 Fremont Street in Kiel, Wisconsin, as the "Trooper Trevor J. Casper Post Office Building".

This bill renames a U.S. Postal Service facility at 220 Fremont Street in Kiel, Wisconsin, as the "Trooper Trevor J. Casper Post Office Building." It directly affects the postal service location and all federal documents referencing it. The bill’s key provision updates all official references (laws, maps, records) to use the new name. No policy changes or funding are involved - this is a purely ceremonial naming resolution.