Why would I trash Kennedy's endorsement of Obama?  Because of a mistake he made 28 years ago?

The credentials committee meme is a canard.  Florida and Michigan could be seated as is at full strength at this point and he would still have the requisite number of delegates.  

You can keep telling yourself that the superdelegates are going to change their mind en masse, but it's not going to happen.  He is the presumptive nominee.