What will President Trump do if the Senate can't pass the health care bill? It's pretty obvious from this morning's tweet: Blame Democrats for whatever happens next.
Between the lines: Remember that Trump threatened the same thing after House Republicans pulled their bill from the floor — before they revived and passed it. But it's also a reminder that the Affordable Care Act does need support from the administration in power, including funding and encouragement for insurers to stay in the markets. The Trump administration has been trash-talking the ACA for so long that they'll have no interest in doing that if repeal fails.