Trump plans to keep national parks open during a government shutdown without the staff needed to protect them. We've seen this before. During Trump's 2018-2019 shutdown, century-old Joshua trees were cut down, prehistoric petroglyphs vandalized, and sensitive ecosystems destroyed. 40 former park superintendents are now warning: "National parks don't run themselves. If sufficient staff aren't there, visitors shouldn't be either." Congress must stop the shutdown and ensure our national parks get the protection they deserve.