AdvertisementRound 2: Health Care Law Faces The Supreme Court AgainMarch 03, 2015Nina TotenbergfacebookEmailSupporters of the Affordable Care Act celebrate outside the Supreme Court in 2012, after a divided court upheld the law as constitutional by a 5-to-4 vote. The latest battle, which the Supreme Court hears Wednesday, is over whether people who buy insurance through federally run exchanges are eligible for subsidies. (AP)