I guess we are just going to have to conceal the weaponry we already have, and find non-conventional ways to resist when the physical search for them begins in earnest.
Crossbows with a large supply of fleches, machetes and various rigged IED road mines, using the example the Taliban and al-Qaeda have set, may be the way this will be nullified. If the cost to subjugate the wider part of the territory once known as “the United States of America” is too high, the would-be emperor and his minions will retreat to their “safe” enclaves.
Because they marched in very conspicuous fashion, it was easy to spot and track the British Redcoats during the Revolutionary War and the War of 1812, while the Americans could rely on their knowledge of the terrain and lay ambushes at critical points while the Redcoats were moving.
At the very least, containing the oppressors in their bunkers, and starving them out, will eventually cause them to surrender.
You've completely missed the whole point of the 2nd Amendment. When the jack booted thugs come for your weapons, you hand them over one bullet at a time.
See my signature line.