Even during the American revolution, there was Catholic support, mostly from Maryland.
One of the signers of the Declaration was Catholic. Charles Carroll. And yes, he was from Maryland.
A great man.
And I say that as a non-Catholic.
“Without morals a republic cannot subsist any length of time; they therefore who are decrying the Christian religion, whose morality is so sublime and pure (and) which insures to the good eternal happiness, are undermining the solid foundation of morals, the best security for the duration of free governments.”
— Charles Carroll