I think you've oversimplified his position on it so that it fits a nice little picture you've painted of him.
Critical thinking on an issue takes more than a sound-bite, so assuming what you think, that he thinks because of his unelaborated comments is just inane hogwash for bickering partisanship.
i.e. our Problem in Washington.
"I think the constitution says too much about what government can't do and doesn't do enough about what government should be allowed to do"
That's one helluva "soundbyte", there, my friend.....
He believes that government and, according to these recent remarks, himself isn't granted enough power to "fundamentally change" America.
I am thankful they don't have such power.