Lynn and Chris McDonnell, parents of Grace McDonnell, who was killed in the Newtown, Conn., school shooting, listen as President Obama talks about their daughter during a Jan. 16, 2013, news conference at the White House on proposals to reduce gun violence. (Associated Press)

Photo by: Susan Walsh

Lynn and Chris McDonnell, parents of Grace McDonnell, who was killed in the Newtown, Conn., school shooting, listen as President Obama talks about their daughter during a Jan. 16, 2013, news conference at the White House on proposals to reduce gun violence. (Associated Press)