Yes she can by way of packing the Supreme Court. The ACLU or the Southern Poverty Law Center will be invited to file an anti Second Amendment lawsuit and work their way up the ladder. The Hillary Supreme Court will then decide that the Second Amendment means for the militia only ( military or police). Then they will rule that gun confiscation is legal and good public policy.
Then lots of already gun friendly states will work the words of the 2nd Amendment into their constitutions, and say to Preezy Hilly, “How ‘bout dem apples?”
Civil wars have started over less. If she wants to reprise Little Rock 1957, then bring it.
But frankly, I don’t think Hillary will be elected, and that’s after a year of assuming that she was inevitable. She’s starting to implode & no amount of voter fraud can stop that.