But now the Supreme Court must decide whether impersonal, for-profit companies do enjoy religious rights that exempt them from providing contraceptives under the Obama administration's health care law.

"That's a big question," said Laurie Sobel, a senior policy analyst with the Kaiser Family Foundation, a private, nonprofit health research group, "and it's a big door to open."

On Tuesday morning, the court's nine justices will confront the corporate religious objections to the Patient Protection and Affordable Care Act. The oral argument marks the court's first reconsideration of the law since a landmark 2012 decision.

This time, in an unusually long 90-minute argument, the closely divided court will hear challenges from a chain of craft stores and a Pennsylvania-based cabinet manufacturing company. Both corporations are owned by devout individuals. Both are profitable.

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