I understand that, but you're assuming they also stop paying federal tax altogether? Your initial point was to just not allow federal employees to transact, but now we're quickly entering secession territory. The red states mostly grow the food, anyway. Is Manhattan prepared to starve? Feds may block imports to such a rogue state.
If your point is that states should essentially secede to prevent federal agents from doing anything within, that's possible, but I don't think most citizens of even the bluest state want to secede.
If your point is that states should essentially secede to prevent federal agents from doing anything within, that's possible, but I don't think most citizens of even the bluest state want to secede.