Can you cite something that overrides 50 USC 1541(c)?
Presidents have said, from the moment Nixon vetoed this law, that the President’s constitutional authority as commander in chief overrides this law, so the War Powers Act which requires Congressional authorization, an attack on the US, or a declaration of war before commencing hostilities, has been played down by many different presidents, now to include Obama.
You did it quite nicely. The Constitution: specifically the Separation of Powers Doctrine. Congress can't tell the President what to do or not do with the military. Their opinion of what his powers are under the Constitution, even if codified in the law are nice but not binding.
In my opinion the Constitution also gives the President the right to use force to counter act the threat of force against us, or to simply enforce or advance our interests. There is nothing in the Constitution that says we have to be attacked before the President can use force. That was the Congress trying to limit the President by legislation.