>>The “Catholic majority” thing was reached when Alito was seated.
From many Protestant points of view the “Catholic majority” existed when Rhenquist (Lutheran) and O’Connor (Episcopal) sat with three or four other Catholic Justices.<<
I did know that - I meant this secures that majority.
If you mean "Hey,we can lose a Catholic justice and still have a majority", technically that's a "secure majority", but it's not a "guaranteed majority" since you could have two retirees, or two deaths, or two just not showing up simultaneously.
Sotomayor, based on her other affiliations, is probably not a "good Catholic".