Sanders, an independent who caucuses with the Democrats, is trying to channel frustration with the law's rollout, which he says is actually making Americans more sympathetic to single-payer systems.
"As the president fully understands, the rollout has been a disaster, the website has been a disaster," he told The Daily Beast. "When you have a lot of complications, it is an opportunity for insurance companies and drug companies and medical equipment suppliers to make billions and billions of profits rather than to see our money go into health care and making people well."
In Vermont, the state government is prepared to roll out its own single-payer system if the U.S. Department of Health and Human Services approves the use of federal funds to do so.
Polls show a sizable minority of Affordable Care Act opponents believe the law doesn't go far enough. Polling on a single-payer model itself varies widely. A 2009 CBS News/New York Times poll pegged support for single-payer health insurance at 59 percent, but a March 2013 Rasmussen poll found just 38 percent support.