John Roberts, if confirmed, would be the third Catholic Chief Justice.
He would be the fourth Roman Catholic on the Court, with Scalia, Kennedy, and Thomas.
If Bush nominates another Catholic, like Alberto Gonzales, then the Supreme Court will be majority Catholic for the first time in history.
With Jewish Justices, the Court would be 7-2 majority for religious minorities (Catholic population is 23%, Jewish population is 2%).
Though Bush is feared to nominate a Southern Baptist, he may be nominating Catholics to appeal to catholic voters and adherents, like his brother Jeb and Jeb's wife.