- Associated Press - Saturday, April 5, 2014

WASHINGTON (AP) - Seven million people signed up, so there is an appetite for President Barack Obama’s health care law, but that doesn’t guarantee success for the country’s newest social program

Big challenges are lurking for the next enrollment season, which starts Nov. 15. Chief among them are keeping premiums and other consumer costs in check, and overhauling an enrollment process that was advertised as customer-friendly but turned out to be an ordeal.

“They have demonstrated the law can work, but we are a ways off from being able to judge its success,” said Larry Levitt, an expert on health insurance markets at the nonpartisan Kaiser Family Foundation.

Republican opponents of the law keep pushing for a repeal, but as millions of people obtain insurance, how long can the party’s strategy remain a politically viable option?

“What the Republicans need to really pay attention to is what they would do different from the Affordable Care Act,” said economist Gail Wilensky, who ran Medicare under President George H.W. Bush.

“Just talking about repeal is not going to make it with 7 million people getting insurance on the exchange. And it has to be something reasonably credible … it can’t just be repeal. We are beyond that.”

The source of the pent-up demand that propelled health care sign-ups beyond expectations could stem from the nation’s new economic reality: a shrinking middle class and many working people treading water in low-paying jobs.

Health insurance has been one of the pillars of middle-class security for decades. With fewer jobs these days that provide health benefits, there was an opening for a government program to subsidize private insurance.

Enter Obama.

When Medicare and Medicaid were created in the 1960s, policymakers took it for granted that people working steady jobs would have access to health care, said Len Nichols, director of the health policy center at George Mason University in Virginia.

That was “back in the day,” Nichols said. “Our assumptions have been all along that you could buy what you needed. But you cannot. And that is why we are where we are.”

It could take the rest of the year to sort out how many uninsured people have actually gotten coverage, the ultimate test of Obama’s law.

Early statistics provided by the administration have not been useful, mingling uninsured people with those who previously had coverage.

But an ongoing Gallup survey has shown a steady drop in the share of Americans without insurance since Jan. 1, when the law’s main coverage expansion took effect. Those numbers should improve because many people still can take advantage of extensions granted by the administration, and because those eligible for the law’s Medicaid expansion can apply at any time.

Still, vindication for Obama’s law isn’t guaranteed. Among the top challenges:

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