The real threat to the 2A is the future makeup of the SCOTUS. Obama can try to do anything else; it won't work. But, when he nominates more anti-gunners to the Court, then the RKBA will die.
Some were too stupid to see this prior to the election, that this was the KEY issue. Well, we will soon pay the price for folks being "true to themselves." Thanks a lot. Our only remaining hope for the RKBA is that the Senate won't confirm an anti-gunner replacing a justice who respected our rights. It's a slim hope.