Neil Heslin, who's son Jesse was killed in the Newtown, Ct., school shootings, speaks in favor of tougher gun laws at a press conference in Concord, N.H. Thursday May 16, 2013. He joined an advocacy group to dispute U.S. Sen. Kelly Ayotte's claim she voted to improve gun background checks. He joined an advocacy group to dispute New Hampshire Sen. Kelly Ayotte's claim she voted to improve gun background checks. Ayotte opposed a key part of President Barack Obama's push to curb gun violence, a measure that would have required expanded background checks for people who buy guns online or at gun shows. (AP Photo/Jim Cole)