i'm alive for a reason and i will work for change. i owe that to my precious son. the president's health care law facing another challenge in the supreme court. justices have agreed to decide whether employers must provide contraceptive coverage even when it goes against their religion. here's abc's jim avila. >> reporter: hobby lobby plays christian music in its 550 stores, and else is some religious-oriented gifts. but mostly, it's an arts and crafts shop. the business model includes being closed on sunday promotes a christian lifestyle and full birth control coverage mandated by obama care does not. >> we do everything we possibly can to be a help to our employees of how they can structure their life based on biblical principles. >> reporter: the owners of hobby lobby don't want to pay for health insurance that pays for post conception birth control for its 25,000 employees. telling the supreme court the so-called contraception mandate violates their religion. >> my convictions enter into how we run our business. >> reporter: the first amendment guarantees individuals the right to practice their religion as