At first I was just going to say that they’d put us all in jail, but then I remembered that if we all do stop, there won’t be anyone left to enforce it.
Discussion
It would have to be a state-by-state thing, like a state can pass a law preventing the IRS and any other enforcement from having any presence in the state (Missouri already prevents gives the finger to the ATF), and then informing their citizens that the federal taxation can no longer be enforced.