New Hampshire challenges "unjust" Massachusetts gun laws over impact on residents who cross state lines

[70sEraVet]

14. Gun ownership should imply a degree of responsibilty for that ownership

Just like, if I'm driving in a state other than my own, I hesitate to make a 'right turn on red', which is legal in my state unless noted on a sign.
My opinion is, if you are carrying a weapon into another state, you have a responsibility to know and obey that state's laws.
That simple.