He'd make a better POTUS that what we have now . . . though that really isn't saying much; there are probably 100,000,000 adults in the USA who'd meet that standard. But his chances of a successful run at the White House are lower than Ron Paul's.
I'd LIKE to see him in the House or Senate, especially if he displaced a "D" incumbent . . . seeing him square off in a debate with (for instance) Al Franken would be rare entertainment.