Since the U.S. government shutdown began, national parks across the country have suffered significantly from the lack of rangers. Drone ban violations are becoming more common, and a Rocky Mountain National Park visitor was even caught chasing a bear out of a tree with one .

Meanwhile, Yosemite has become a lawless playground , and Yellowstone tourists continue to test their luck with bears .

This is why over 450 former National Park Service (NPS) employees wrote a letter to U.S. Secretary of the Interior Doug Burgum, accusing the U.S. government of breaking two crucial acts and asking for critical action: the closure of national parks across the country.

Here are the two acts the U.S. government is allegedly breaking, and why former and retired NPS employees are demanding park

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