Sleeping Bear Dunes National Lakeshore Conservation and Recreation Act became law 415 days after introduction, with one cosponsor, a Democrat

(This measure has not been amended since it was introduced. The expanded summary of the Senate reported version is repeated here.) Sleeping Bear Dunes National Lakeshore Conservation and Recreation Act - Designates specified land and inland water within the Sleeping Bear Dunes National Lakeshore in Michigan, to be known as the Sleeping Bear Dunes Wilderness, as wilderness and as a component of the National Wilderness Preservation System. Requires the boundary of the Wilderness to be: (1) 100 feet from the centerline of adjacent county roads, and (2) 300 feet from the centerline of adjacent state highways. Specifies this Act's effect on: (1) the maintenance and improvement of roads located outside the boundary of the Wilderness; (2) Michigan's jurisdiction with respect to the management of fish and wildlife, including hunting and fishing, within the National Lakeshore; and (3) any treaty rights or any existing valid private property rights.