ronald reagan invaded grenada in 1983. the same as george h.w. bush in panama in 1989. bush did the same thing in somalia in '92, bill clinton bombed iraq in '98. bill clinton led the nato bombing of the former yugoslavia in '99. no congressional authorization. obama launched tomahawk cruise missiles to get rid of gadhafi in 2011. no congressional authorization. why do you believe it's necessary now? >> well, let's be clear, the president is not does not believe he is required to seek congress's authorization. what he believes is that when congress authorizes his proposal for a limited targeted strike so that assad understands that our response to his violation of a 100-year-old international norm not to use chemical weapons against either your own people