It looks like Senator Coburn is planning on an amendment to S.2483 that would require all lands under jurisdiction of the Department of the Interior to follow state law in regards to possession of firearms. You can read Coburn’s case for passing this amendment here.
I have heard also that John McCain will be signing on as a co-sponsor of this amendment. Any bets on whether Hillary or Obama will? Just keep that in mind for those who claim there’s no difference between McCain and the Democrats.