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

itoggle caption Kevin Dietsch /UPI /Landov

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

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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

itoggle 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

itoggle caption Adam Cole/NPR

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

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Supporters and opponents of the health care law rallied in front of the Supreme Court Tuesday, as the court considered the constitutionality of the insurance mandate. John Rose/NPR hide caption

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A bulletin board in New York's Jamaica Hospital offers advice for uninsured patients. Seth Wenig/AP hide caption

itoggle caption Seth Wenig/AP

On Tuesday, the Supreme Court will consider whether Congress can require people to buy health insurance. Adam Cole/NPR hide caption

itoggle caption Adam Cole/NPR

Demonstrators in support of President Obama's health care overhaul march outside the U.S. Supreme Court on Monday. John Rose/NPR hide caption

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Members of the public line up Monday morning as the Supreme Court begins three days of arguments on the health care overhaul law signed by President Obama in Washington. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Louisa McQueeney manages a small business in Lantana, Fla., shipping gift food and produce. She believes the new health care law could bring down her employee health care costs, but Florida Gov. Rick Scott disagrees, and he's leading the battle to strike down the law in court. Greg Allen/NPR hide caption

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