Many of the proposed gun laws would have done nothing to prevent the Newtown shooting
The federal private-sales loophole (which is often called the “gun-show loophole,” but is much broader than that) should be closed, but killer Adam Lanza didn’t buy his guns at a gun show. He took them from his mother.
Background checks should be stricter, but again, Lanza would never have been stopped by a background check. The guns weren’t registered in his name.
Waiting periods make sense for gun buyers, but again, they would’ve had little effect on Lanza, who didn’t buy the guns he used to murder his mother at home and 20 children and six adults at Sandy Hook Elementary School.
The assault-weapons ban should never have been permitted to lapse, but if it was still law, there’s little evidence that it would have stopped Lanza, or even forced him to use a different kind of gun. The ban was full of loopholes, and any guns built before it took effect were grandfathered in as fully legal.