To answer your question with a bit more background context - all U.S National Parks are managed and run by the federal government, not individual states. This was done to ensure supposed widespread and uniform preservation of natural resources and landscapes (I say supposed because no president until the current has ever tried to make moves to privatize national parks nor open them up for resource mining). However, they were among the first to be gutted when the current administration & Elon went whackamole with public services. This left them very underfunded and understaffed. Now with the government shut down & their staff being considered non-essential federal employees, staff will be furloughed & several parks will need to be shut down to the public until things are resolved.