Do we have actual, incontestible proof that this man is even human? How can a grown man who supposedly was born and lived in Hawaii - a US Navy-intensive state - not know how to pronounce "corpsman"? Does Obama also refer to the Marine Corpse?
As a conservative I don't think that pronunciation has anything to do with politics, However I believe if you crucify one president for it you should do it with all presidents. One upon a time little slip ups like this would be ignored.