I think we have to be ready for civil disobedience. If Congress lets Obama try to kill the 2nd Amendment with an Executive order then time to ignore the blatantly unconstitutional action. If enough people are ready for it, I believe the entire gun-owning citizenry would agree.
Of course I also thought the governors would show some backbone if O pushed the refugee thing.
A majority of governors have shown some backbone in defying Obama on the refugees. I believe the count is over half by now. I know Florida ‘s gov. has formally protested.