From The Truth About Guns:

Two New Hampshire men charged in separate incidents with unlawful possession of a gun have challenged Massachusetts firearm law. Dean Donnell Jr. and Phillip Marquis are both legal gun owners and residents of New Hampshire, a state that issues carry permits for purposes of reciprocity but otherwise observes constitutional carry, meaning that no license is necessary to open or conceal carry within the state. Attorneys for the men argue that Massachusetts felony charges, under the state’s strict firearm laws, are a violation of their Constitutional rights. 

“Massachusetts can’t be less protective than the Second Amendment,” argued Hayne Barnwell attorney for Phillip Marquis.