Crushed Between the Left and the Right
More than anything, the President's current troubles illustrate the impossibility of succeeding as President when one has run without much of a record, and instead deliberately sought to be a "blank screen" upon which everyone's best hopes could be projected, in order to win.
Left and right may not agree on much in this country -- but they both react to a politician's "bait and switch" the same way: With anger.