Why New Zealand's new gun controls would be unconstitutional in America

As my colleague Anna Giaritelli notes, gun control activists are calling for U.S. adoption of New Zealand's new gun regulations, as ordered by Prime Minister Jacinda Ardern following last week's terrorist attack.

One problem: these calls reflect either a basic lack of understanding on U.S. constitutional law, or a failure to actually read the New Zealand regulations.

I have read those regulations, and I am convinced that Ardern's new regulations would be patently unconstitutional were any federal, state, or local government to enact them in America.