More than 90 percent of Biscayne National Park is under water, so no one would miss it if it was dropped from the National Park System, right? You might say the same for Cape Hatteras and Cape Lookout national seashores, which are located on barrier islands that sea-level rise eventually is going to submerge, so why should they remain in the system? Bering Land Bridge National Preserve attracted fewer than 3,000 visitors last year, so why is the National Park Service paying staff to keep it open? Close it!