Sure, I agree... I don't even believe in nations. Yet you have to live in the real world, and in the real world this idea doesn't sound too practical.
I would guess it would require giving up your US citizenship, if that is the case you can now write off voting, gun ownership, hunting, medical assistance for the poor, retirement benefits from s.s., certain fha and ect housing options, 401K plans, IRA, and any other federal back program. Now if you were a true non US citizen and came into this country then thats a whole new ball game.