How much would you wager on the constitutionality of the sweeping federal health law? Images_of_Money/Flickr hide caption

toggle caption Images_of_Money/Flickr

Activists gather in front of the U.S. Supreme Court on Wednesday as the court hears a third day of arguments on President Obama's health care law. Kevin Dietsch /UPI /Landov hide caption

toggle caption Kevin Dietsch /UPI /Landov

Supporters of the health care law rally in front of the Supreme Court Wednesday, the final day of arguments over its constitutionality. Charles Dharapak/AP hide caption

toggle caption Charles Dharapak/AP

People wait for tickets to attend the last day of arguments over the Affordable Care Act at the Supreme Court. Chip Somodevilla/Getty Images hide caption

toggle caption Chip Somodevilla/Getty Images

If the Supreme Court rules that the health insurance mandate is unconstitutional, does that invalidate the rest of the law? Adam Cole/NPR hide caption

toggle caption Adam Cole/NPR

The final argument the Supreme Court will hear about the new health care law is whether its Medicaid expansion unfairly forces states to participate. Adam Cole/NPR hide caption

toggle caption Adam Cole/NPR

An activist dressed as the Statue of Liberty participates in a protest on the second day of oral arguments over President Obama's health care law on Tuesday. Mark Wilson/Getty Images hide caption

toggle caption Mark Wilson/Getty Images

Opponents and supporters of President Obama's health care overhaul rallied outside the Supreme Court on Tuesday. Bob Mason shows support for the Tea Party by dressing in costume as one of the Founding Fathers. John Rose/NPR hide caption

toggle caption John Rose/NPR

NPR thanks our sponsors

Become an NPR sponsor