CORRECTION: A later version of this infographic was edited to provide more clarity in Massachusetts' mental health reporting laws.
New Hampshire and Vermont do not require that mental health information be reported for use in firearm purchaser background checks. Massachusetts, on the other hand, will not issue any firearms license if the applicant has been confined to any hospital or institution for mental illness, unless the applicant submits a physician’s affidavit.
And while the federal government prohibits the carrying of firearms into school zones, New Hampshire does not have a state law prohibiting non-students from doing so -- while Vermont and Massachusetts do.
These are just some of the things we learned when we compared the gun laws in New Hampshire to those in Vermont (one of the least regulated gun states in the nation), and Massachusetts (one of the most regulated).
Click on the image below to see a larger version of our comparison chart.