Im sure this has been braught up already...
but the next President will most likely appoint a few Supreme Court Justices.

Justice Scalia is 78
Justice Kennedy is 77
Justice Breyer is 76
Justice Ginsburg is 81 and not in good health
Justice Stephens has already said he is ready to retire.

Just imagine Obama appointing 3 or more Justices if he were to win re-election
You could save more innocent lives by taking pens away from politicians than by taking guns away from law-abiding citizens.