I did, and there's no gun to my face. All you do is write to them.
It is quite simple and nonviolent.
If you don't understand that government is a corporation that runs on contract law, you're fucked, and should pay taxes or go to jail, so you can have some free time to pick up a law book from the jail library. Then you'll have plenty of time to learn about Contracts 

 Will it work if I tell them to stop stealing from my paycheck? 

 Yeah dude but you gotta tell them with forms, like a W-8BEN with 0% written on it or a W-4 with "exempt" written on it.
If anyone asks if you're a US citizen, you tell them no, that you're a non-citizen national of your state, or of the united states.
 

 Nice, I can try that. So what happens when you want to travel by commercial plane? 

 You pull out your passport, or your gun (loljk) 

 This just leads to more questions, like after I file those forms, will there be a confirmation from them? If there is, then I can use that to get my employer to not withhold my money from me?