Earlier quoted context omitted.
It doesn't require a constitutional amendment, we can just repeal the law [0] being used, which would ironically involve the same number of votes as keeping the law but slapping down Trump's particular usage of it. (That's now how it originally worked, but the easy-slapdown route got ruled unconstitutional.) Military alliance stuff might be harder. Some stuff like NATO is supported by actual legislation, but other st…
> we can just repeal the law [0] being used Only with a veto-proof majority in both chambers.
Originally it wasn't veto-able (only needed a Concurrent Resolution of 50% in each house, no Presidential signature) but the Supreme Court ruled that part unconstitutional in the early 80s.