67 Senators? That’s a pretty high standard. You can’t completely ban Congress passing any law. They pass unconstitutional laws all the time.
This makes it harder - much harder. As such, why NOT be a supporter?
The makeup of congress changes.
And we have had many “R” labeled idiots who wholeheartedly support gun bans.
Romney comes immediately to mind, all it takes is for a bunch of them to be in congress together and you have your 67 votes.