There won't be an uprising.
Back when there was an uprising, the citizens didn't wait for the govt agents to come to individual doorsteps. The mere presence of the forces of the king on American soil, was enough.
Paul Revere didn't say "molon labe, come to my house and I'll put up one hell of a fight."
The enemy is on American soil. What do we do? Pay whatever is demanded. Pay their salaries. Pay for their vacations. Pay your licenses and registrations and health insurance and whatever else they tell you to pay for.
I agree. They would probably say something like, “The US government will pay $100.00 for tips of people you know who own guns.”