Here is another example of how McCain says whatever is convenient at the time. (RIP Tim Russert) This is old, but it still shows the varying flip flopping.
Please watch the whole video to get the whole idea and to watch McCain get OWNED by Mr. Russert.
If you can't attack a person on what they say, what can you attack them on. Please pay attention to McCain's comments on the economic situation that he helped create as a person totally in favor of deregulation. Now we are just about in as bad shape as the nation was in during what has been called the Great Depression.