Assuming they "resist you with force of arms" pro-actively and openly with even generic hunting rifles at 200+ yard distances, law enforcement as we currently know it would evaporate by decimation or intimidation. "First responders" would no longer be responding: a call to 911 would yield nothing, you are on your own.
Existing and would-be criminals would run rampant resulting in chaos (flash mob lootings, rapes, murders) and eventually all-out anarchy, likely resulting in the loss of the most basic services such re-supplying supermarkets, gas stations, the power grid, water, etc.
Gun control would be the least of anyone's concern, including LEOs and FLEAs AWOL at home protecting their own, as basic survival would take precedence: food, shelter, protection.
Tens if not hundreds of thousands will perish before any assemblence of civilization is restored. Swell.
"Law Enforcement Officers" and "Federal Law Enforcement Agents" should ponder carefully whether they really want to unleash societal chaos by attempting to enforce the unconstitutional dictates of oath-breaking politicians.
I believe Obama wants this war, as a crisis he can use to accelerate the creation of an all out police state. We are thinking nationally. He is thinking globally. It is an error to underestimate him.
For example, I can envision a scenario where he understands how gun owners will react to confiscation laws, and how local law enforcement will become spotty at best, utterly absent at worst. This is, I think, by design, and would be used to justify bringing in “outside help.” Many of our fellow Americans will believe this is a good thing, and this would be why the propaganda wing is systematically isolating the scapegoat, to deny us the aid we would otherwise have from our neighbors in that moment of calculated crisis. It is a sophisticated divide and conquer strategy.
I have no immediate insights on how best to cope with such a strategy, beyond working now to prevent the progression to the point of no return. Open conversation with the potential enforcers of these forthcoming illegal laws is a good start. But the plan must account for the whole enchilada, and honestly I’m not sure what that entails. I do know this. If we trust our guns alone, God may well let us fail. Not by might, nor by power, but by My Spirit, saith the Lord.