Earlier quoted context omitted.
> The US constitution has a crystal clear right to bear arms It looks like it was drafted by an ESL speaker. It's by far the worst-drafted amendment, grammatically speaking: > A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed. It's not even a valid English sentence, and it certainly never bothers to define "Arms." Not to me…
Remove the first and last comma and the sentence works splendidly
> [Noun], being [clause], [grammatically correct sentence]
is objectively incorrect English grammar.
Eliding the "being" appositive, you're left with
> [Noun], [sentence].
Unless you're talking to the noun (as in "Hey, you, the well regulated militia! Did you know that the right to keep and bear arms . . . "), it's not grammatically correct.