A country can&#x27;t sign part of an international treaty. They must agree to whole thing, not only the parts they like. Leaving it open for modification would essentially mean reopening negotiations, which is a good recipe not never getting any trade agreements signed. Regardless of whether or not you agree with this particular trade agreement, SOME trade agreements are good, and forcing them to happen in the open with each government having the option to modify it would be a terrible idea.