Stop Paying Taxes

The most immediate consequence of a mass tax revolt would be a colossal budget deficit for governments. With their primary revenue source severed, they would be unable to fund public services, pay government employees, or invest in essential projects.

But I would bet that the assclowns in Congress and The Senate would manage to pay themselves.

One way tax-free countries can make money is with customs and import duties. By imposing tariffs (which are often very hefty) on imported goods, they're able to supplement the income they would otherwise have gotten from taxing their citizens and the companies that do business within their borders.