Yellowstone National Park officials are "challenged" by the new federal regs allowing concealed-carry permit holders to do so in national parks, subject to the surrounding state's law.
Sebastian helps with a definition of "federal facility," straight out of the U.S. Code.
Yes, Yellowstone National Park does include bits of Idaho and Montana, although by far most of it is in Wyoming.
Permit holders will "have to do a lot of research," warns a former NPS employee, with the obvious implication that they are incapable of doing so.
One Web site is all you need. There, wasn't that easy?
These Park Service types remind me of the Teen Talk Barbie of 1994 that squawked "Math is hard!" when you pushed a button.