Bingo!! No treaty supersedes the US Constitution.
All the law abiding, good citizen gun owners are definitely putting a damper on many tyrannical plans.
Without the Second Amendment, we would be in so much worse shape than we are. Many of the current people in power are on a par with Hitler, Stalin, Mao and Castro, to name a few, but they are reined in by fear of the Second Amendment. And thank God for that.