We have a mad man in the White House at the moment. The more checks and balances the better. But that's not the only reason to vote yea. Launching nuclear weapons would undoubtedly effect the entire world for a very long time. Because of this 1: Everyone should have a say in the decision. 2: Such a big decision shouldn't be rushed into. Having to get approval will give you time to discuss options that aren't so dramatic. Especially so with Trump, he may launch without thinking it all the way through.