TSA precheck is run by private corporations - the TSA are of course the people that operate the actual airport, but the corporations are the people you sign up

TSA precheck is run by private corporations - the TSA are of course the people that operate the actual airport, but the corporations are the people you sign up with that assess you. Aramark (you're right, my mistake) couldn't ban you from the park, but they could definitely ban you from their campgrounds. So you could drive into the park, but you wouldn't be able to camp in most of it (except for backcountry). I'll grant you the competitive marketplace for insurance, though I'm not sure it fully eliminates that point.