We're all equals. One person doesn't have the authority to tax another.
One person, no. The people, yes.
You're making the same blunder with taxation that you did with the Constitution: confounding the single party with the parties of the compact. Its the same inept logic that led you to the ludicrous conclusion that an individual can secede their home from the United States if they wish.
Though lets explore this idea little further. Are any mandatory laws allowed under your conception of 'aggression'?