The U.S. Supreme Court is hearing arguments this week in a religious-rights case.
Owners of Hobby Lobby, Mardel and Conestoga Wood say their religious beliefs prevent them from offering employees health insurance with free birth control.
Affordable Care Act health plans cannot charge co-pays for birth control and other reproductive services.
The court must decide if the religious objections have any merit.
It must also decide whether the corporation itself or its owners can object.
The high court will hear arguments on Tuesday.