NEW : By a 51 % -45 % margin , Americans questioned in a new Pew Research Center poll Assault weapons ban , universal background checks are part of plan , says official . Comment: : So is a ban on magazines with more than 10 rounds , the official says . Moves are a response to the December massacre at a Connecticut school .
NEW : Assault weapons ban , universal background checks are part of plan , says official . Comment: : So is a ban on magazines with more than 10 rounds , the official says . Moves are a response to the December massacre at a Connecticut school .