The others are justices John Roberts, Anthony M. Kennedy, Antonin Scalia, Clarence Thomas and Samuel Alito Jr.
Experts have been split on what the Catholic majority has meant so far. They point out that Catholics on the bench historically have spanned the spectrum from liberal to conservative. Dennis J. Hutchinson, a court historian at the University of Chicago, noted in 2005 that one of the most liberal Supreme Court justices of the 20th century, William J. Brennan, was a Catholic, and so is one of the most conservative, Scalia.
The religious affiliation of the justices is not a burning issue because “we’ve learned that Catholics can be conservative or liberal, and that in terms of judges, ideology trumps any sort of presumption about church doctrine — and that’s true whether the justice is a Protestant, a Catholic or a Jew,” he said.