First of all, seasteading is all about decentralization. It's gonna take a lot of nukes, and nukes are expensive, especially in PR terms. They'll have to convince people that we're evil terrorists. If we're sitting there in New Hampshire and not paying taxes, the sheep can be made angry at us for "not paying our fare share". But if we're out there somewhere else... maybe they'll just let us go... And remember, different seasteads can have different ideologies, including greens, commies, whatever. If the peace nuts protest taking out an asshole like Saddam, won't they protest for us as well?