Last week, President Obama's Justice Department asked the Supreme Court to hear oral arguments in a case that pits religious protections against the courts' ordinary ability to intervene in a labor dispute to prevent discrimination.In the early 2000s, Cheryl Perich was a "called teacher" or "commissioned minister" at Hosanna-Tabor Evangelical Lutheran Church and School in Redford, Mich. As such, she taught religious classes, led students in prayer and incorporated religious teachings into secular subjects like math, science, social studies and art.But in 2004, she was diagnosed with narcolepsy and became unable to teach the fall semester that year. When she...