As I've argued for years, it was always unlikely in the extreme that whoever followed Bush the Younger into the Oval Office would be inclined to roll back the extraconstitutional powers that Ashcroft, Gonzales, Yoo, and the rest had ginned up for the president -- powers that would have made even John Adams nervous. Presidents, and the people around them, just don't do that. Maybe a few ornamental changes, but serious reversals? Nope.
Instead they look for ways to push the envelope farther.