(CNN) - For most of American history, a Supreme Court with no Protestant Christian judges would have been unthinkable. Nearly three quarters of all justices who've ever served on the nation's high court have been Protestant.
And roughly half of all Americans identify themselves as Protestant today.
But since John Paul Stevens announced his retirement last month, legal and religious scholars have begun entertaining the unprecedented prospect of a Supreme Court without a single Protestant justice.
Besides Stevens, who is Protestant, the current Supreme Court counts six Catholics and two Jews.