Nice try. Thanks for playing 'We're from the government and we're here to help.' Better luck next time.
The "sovereign nations on Indian reservations" don't fare any better down Constitution Avenue at the IRS, thus scuttling my personal idea for a "free-trade zone" on the Rez.
The FDA considers Indian Reservations to be possessions of the United States...
I have no idea whether it's ever been tested in court, but I have a feeling that if the law actually said that reservations are possessions of the US for FDA purposes, the FDA would have said so explicitly instead of telling us what they consider them to be.
That's all well and good AndyN, but I think our friend and gubernatorial candidate may as well advocate that Colorado establish a colony on the moon.