“We’ll have a real-world test of the Affordable Care Act and whether employers accept it, whether the public accepts it,” said Drew Altman, president and chief executive officer of the Kaiser Family Foundation. “That will change the entire discussion about the Affordable Care Act, because up to this point, it really hasn’t been a discussion of what the Affordable Care Act really does.”…

If the price of health coverage in the exchanges is too high, for example, conservative critics expect a backlash.“I think people will be in for serious rate shock, especially in those individual markets that have been relatively lightly regulated,” said Douglas Holtz-Eakin, president of the American Action Forum…

One fight already under way centers on whether people will be able to get subsidies in health exchanges that are run by the feds, or only when the states themselves run them. There’s also a pending legal challenge from Liberty University against the requirement that would make most businesses with more than 50 workers provide health coverage or pay a fine. Liberty says that requirement is unconstitutional — and yes, it has vowed to fight all the way to the Supreme Court.