For now, odds still favor the Affordable Care Act's survival. But after making it through the Supreme Court, a presidential election, numerous congressional repeal votes and a government shutdown, the law has yet to win broad acceptance.
"There's been nothing normal about this law from the start," said Larry Levitt, an insurance expert with the nonpartisan Kaiser Family Foundation. "There's been no period of smooth sailing."
Other government mandates have taken root in American culture after initial resistance. It may be a simplistic comparison, but most people automatically fasten their seat belts nowadays when they get in the car. Few question government-required safety features such as air bags, even if those add to vehicle costs.
Levitt says the ACA may yet have that kind of influence on how health insurance is viewed. "An expectation that everybody should have health insurance is now a topic of conversation in families," he says.
That conversation was interrupted by news that the HealthCare.gov website didn't work and that people with coverage were getting cancellation notices despite Obama's promise that you can keep your insurance.
Obama maneuvered this past week to extricate Democrats from the cancellations fallout.
The president offered a one-year extension to more than 4.2 million people whose current individual policies are being canceled by insurers to make way for more comprehensive coverage under the law. This move by the White House was intended to smooth a disruption for which his administration completely failed to plan.
But it also invited unintended consequences, showing how easily the law's complicated framework can start to come loose.
State insurance commissioners warned that the president's solution would undermine a central goal of the law, the creation of one big insurance pool in each state for people who don't have access to coverage on their jobs. Fracturing that market could lead to higher future premiums for people buying coverage through the law's new insurance exchanges, which offer government-subsidized private insurance.
That Obama is willing to take such a gamble could make it harder for him to beat back demands for other changes down the line.
On the cancellations front, the president seems unlikely to break through. He may yet battle to a political draw.
Obama realizes it's on him to try to turn things around, and quickly. In the first couple of weeks after the website debacle, Obama played the sidelines role of "Reassurer-in-Chief." Now he's on the field, trying to redeem himself.
"I'm somebody who, if I fumbled the ball, I'm going to wait until I get the next play, and then I'm going to try to run as hard as I can and do right by the team," Obama said Thursday at a news conference.
Making sure the website is running a lot better by the end of the month may be his best chance for a game-changing play.