Getting the new system off the ground is more important to the White House — at least for now — than fighting back in the endless political back-and-forth with Republicans over the law's merits, Obama said.
"Rather than try to disabuse people of every single bit of misinformation that's been out there, what we're saying is, 'Just look for yourself,'" Obama said.
The administration and its allies are especially focused on enrolling young adults. Getting young people into the system is key to moderating premium increases that come from guaranteeing coverage to people with pre-existing conditions.
"This only works, for example, if young people show up … We've got to have them in the pools because otherwise these projected low costs cannot be held," Clinton said.
Critics of the law have urged young adults — who are vital to the law's success or failure — to remain uninsured as a way of undermining ObamaCare. Opponents have far outspent supporters on advertising, and congressional Republicans are pressing their case against the law.
"Make your own decisions about whether this is good for you," Obama said. "Because what we are confident in is that, when people look and see that they can get high-quality, affordable healthcare for less than their cell phone bill, they're going to sign up."
Premiums in some states will fall next year as a result of ObamaCare, but other consumers will still pay more each month than they do now.
In several states that have released their rate information, low-cost plans are available for between $100 and $200 per month, before accounting for new tax credits that will help low-income consumers cover the cost of their premiums.
Obama also criticized congressional Republicans for their push to repeal or sideline the law before it takes full effect.
"It is an odd logic," Obama said. "Essentially they're saying, 'People will like this thing too much, and then it will be hard to roll back.'"