File photo of Massachusetts Governor Patrick addressing first session of the Democratic National Convention in Charlotte

 
File photo of Massachusetts Governor Patrick addressing first session of the Democratic National Convention in Charlotte
Massachusetts Governor Deval Patrick addresses the first session of the Democratic National Convention in Charlotte, North Carolina in this September 4, 2012, file photo. Patrick introduced a new series of gun laws on January 16, 2013, that would tighten rules on sales of weapons and ammunition, in the wake of last month's deadly school shooting in neighboring Connecticut. REUTERS/Eric Thayer/Files