It's more that absolutely nothing is done at all. Not even Sandy Hook produced any change whatsoever. A prominent argument was that the entire thing was a fake for the purpose of banning guns, tacitly admitting that reality did merit some kind of change.
So at this point it's more of an indicator that politics has utterly broken down. We can't meaningfully discuss a limit case such as you bring up, because the answer is predetermined. Between a Supreme Court composed two-thirds of candidates vetted to allow no gun restrictions of any kind ever, and a set of checks and balances in the Congress that requires a super majority for any legislation, the argument is permanently decided in favor of "doing nothing". Not just on this issue but on every issue.
Compared to that worrying about Zombie George III reimposing the Stamp Acts doesn't seem much like worrying about.