Minuteman Missile National Historic Site Boundary Modification Act became law 197 days after introduction, with one cosponsor, a Republican

(This measure has not been amended since it was introduced. The summary of that version is repeated here.) Minuteman Missile National Historic Site Boundary Modification Act - Amends the Minuteman Missile National Historic Site Establishment Act of 1999 to modify the boundary of the Minuteman Missile National Historic Site in South Dakota by including in the Historic Site a visitor facility and administrative site located on a specified parcel of land that consists of: (1) approximately 25 acres of land within the Buffalo Gap National Grassland in Jackson County, South Dakota, and (2) approximately 3.65 acres of land at the Delta 1 Launch Control Facility for the construction and use of a parking lot and for other administrative uses. Transfers administrative jurisdiction over such land from the Secretary of Agriculture (USDA) to the Secretary of the Interior. Modifies the boundary of the Buffalo Gap National Grassland to exclude the transferred land.