What the President wants is irrelevant. Only what he does matters. The Democratic Party will not squander its political capital on guns at the national level. They've been down that road, and it ended poorly. Locally things could be different, but the PotUS isn't involved there.
Did you forget the Executive Orders he is so fond of? He will spit in the collective face of Congress to do what he wants. But, I think he will use the UN to do it so that he won't be seen as the "bad guy". (He always has to blame someone else.)
I won't put ANYTHING past that POS!