The Senate on Tuesday passed the most sweeping conservation legislation in a decade, protecting millions of acres of land and hundreds of miles of wild rivers across the country and establishing four new national monuments honoring heroes including Civil War soldiers and a civil rights icon. The 662-page measure, which passed 92 to 8, represented an old-fashioned approach to dealmaking that has largely disappeared on Capitol Hill. Senators from across the ideological spectrum celebrated home-state gains and congratulated each other for bridging the partisan divide. “It touches every state, features the input of a wide coalition of our colleagues, and...