Blocks the executive branch from moving department or agency headquarters out of the National Capital Region unless Congress passes a new law allowing it. It also prevents relocating federal employees whose official duty station is in the National Capital Region as of the bill’s introduction date, unless Congress authorizes the move.

This freezes HQ locations and affected employees’ duty stations in the DC area based on that specific date. It doesn’t create new programs, change taxes, or spend money; it sets a clear rule that only Congress can approve these relocations.