Lately we’ve heard a lot from the bureaucrats at the National Park Service about a looming budget crisis. They urgently need $11.5 billion for maintenance of roads, bridges, visitor centers, trails, and campgrounds worn thin by an enormous increase in visitation. In 2015, the Park Service logged 300 million visitors, the most in its recorded history. The number rose to 330 million in 2016 and stayed there during 2017. Overcrowding on the trails, congestion on the roads, tourists aghast at...