There can be no religious test according to our Constitution. Would you like to reword your comment? You might want to say, "It is an odd thing, statistically speaking, for the 5 conservative justices all to be Roman Catholic.
For what it's worth, all of the justices, with the exception of Thomas who is from Georgia, are from the coasts and not from flyover country. New York, New Jersey, and California. That's odd, too.
This has nothing at all to do with there being no religious tests allowed. An entirely different matter, and since the liberals tried to bring it up with Romney (whose cult of planet gods and until recently seeing African-Americans as accursed IIRCdoes depart from the foundation of Christianity) it’s important that the GOP voters get the matter straight. Even with no religious tests, all GOP members of Congress are Christian, and devout Christians are overwhelmingly GOP while secular humanists are Dem. There is nothing against a party choosing or not a candidate or nominee for any reason. If you believe God created us and salvation is found only in Jesus, who will you want to choose? Although not the same exactly, it’s like the government can’t prevent people of different religions from marrying, but that doesn’t mean a Christian can’t say they’ll only marry another Christian.
You know what's really odd?
THEY'RE ALL LAW SCHOOL GRADUATES.
Seriously.
Every last stinkin' one of 'em.
Not an engineer, accountant, or auto mechanic among 'em.
NOT EVEN ONE!!!!
It's a conspiracy, I tell you!