; (10) over 400 people attended the hearings in Chicago, Illinois, of which— (A) 42 people, including Henry Cowles, spoke in favor of the proposal to establish the national park; and (B) there were no opponents to the proposal to establish the national park; (11) plans for a Sand Dunes National Park were delayed because the United States entered World War I and national focus shifted away from national parks to national defense; (12) local conservation efforts to preserve the Indiana Dunes persisted after World War I and culminated in— (A) the establishment of Indiana Dunes State Park in 1925; and (B) the enactment in 1966 of Public Law 89–761 ( 16 U.S.C. 460u et seq.), which established the Indiana Dunes National Lakeshore; (13) the Indiana Dunes National Lakeshore was subsequently expanded in 1976, 1980, 1986, and 1992; (14) the Indiana Dunes National Lakeshore and the adjacent Indiana Dunes State Park are comprised of over 15,000 acres of dunes, oak savannas, swamps, bogs, marshes, prairies, rivers, and forests that are preserved for public enjoyment, including 15 miles of shoreline along Lake Michigan that extend from Gary, Indiana, to Michigan City, Indiana; (15) the Indiana Dunes National Lakeshore is— (A) one of the most biologically diverse units of the National Park System, containing 2,336 unique species, including 896 animal species and 1,407 plant species; (B) a cherished cultural landmark that attracts millions of visitors each year; and (C) an especially important feeding and resting area for migrating land and water birds, including 350 unique species of birds; and (16) institutions such as the Dunes Learning Center— (A) attract youth and other community members to the Indiana Dunes