A recent letter backing Ketanji Brown Jackson for the Supreme Court rattled off many of her supporters’ oft-stated reasons she should be confirmed — her top-notch academic credentials, her support from police groups, her expansive experience in the law. But this particular endorsement, written by 16 law professors from Brigham Young University in Provo, Utah, added another element of Jackson’s record that has not been as frequently discussed. “Though we do not believe that religious faith should be a test for any federal office, as faculty at a law school whose sponsoring church endured persecution by the federal government, we...