WASHINGTON – U.S. Senator Dick Durbin (D-IL) today introduced a bill that would designate the Cahokia Mounds State Historic Site as a National Historic Park. Cahokia Mounds is currently a National Historic Landmark, but Durbin’s bill would provide a new designation that ensures protection for the ancient mounds in St. Clair and Madison counties along with Sugarloaf Mound in St. Louis—the city’s only remaining mound.