This is less about WMDs and more about being al quaeda's air force. If a republican supported those who disemboweled people and ate their entrails I would definitely oppose that. Without wanting to come out and say so, those leaders who have withdrawn their support or never gave it, can't bring themselves to support terrorists. Just the wanton cruelty terrorists do in Syria and in Egypt on a daily basis puts doubt that Assad used chemical weapons and the terrorists are the ones who did.