President Obama will name Vice President Biden to head the push for gun-control policy change, reports said Wednesday. The White House has faced increasing calls for stricter gun control in the wake of the deadly rampage in Newtown, Conn., that killed 20 children, seven adults, and the shooter, Adam Lanza, 20. Obama issued a call to action at a vigil in Newtown on Sunday, saying he would “use whatever power this office” has to push for a way to end these tragedies. On Tuesday, White House press secretary Jay Carney said the president supports banning assault weapons, as well as closing the so-called gun-show loophole. The assault weapons Lanza used in the massacre were all purchased legally by his mother.