CHICAGO (Reuters) - Roman Catholics would be the majority on the U.S. Supreme Court for the first time if Samuel Alito is confirmed -- a historically remarkable prospect in a country where "papists" were once taught in state schools that their faith was a lie. But so far the development has passed for little more than a curiosity, reflecting how politics trumps religion when it comes to appointments to America's highest court, experts say. Alito and the Catholics already on the court -- John Roberts, Anthony Kennedy, Antonin Scalia and Clarence Thomas -- appear to share many conservative views held...