[tpaine]

I remember taking a coach tour of our western National Parks a few years ago, and I was astonished to see signs all over the place probibiting bringing firearms in Yellowstone National Park.

Obviously unconstitutional prohibitions.
Some main highways run through Yellowstone. I'd bet that hundreds [if not thousands] of travelers a day rightly ignore those 'laws'.

[Freedom4US]

I've travelled a lot in National Parks, BLM land, National Forest, Wilderness areas, etc. etc., if one is discreet, nobody has to know, even if it is "illegal". I'm not suggesting anyone break the law, but it's better to be safe than sorry, if you catch my drift.