Well, let's see now, Catholicism had been an oppressor in Europe for a long long time. Catholics coming to this country were not going to be allowed to lord themselves over the people in the new world the way they had in the old. And when it comes to exclusion, the Catholic Church has excluded itself. It was the Catholic Church that couldn't abide core christian teachings in the schools so Catholicism excluded itself from the school system and teaches their own form of history, and its religion. So let's us just get it strait and paint the backdrop that existed.
No religion was going to be given preferrence in this country in the early days no matter what anyone believed in particular because this country was trying to escape authoritarianism under the guise of the combination of Church and state epitomized in England. It had first been the King/Queen and Catholic oppression; but, when the Catholics meddled too far, it became the Monarch plus Church of England. And Church of England was (is) baaaad news too! Were catholics excluded? Yes, by catholics. Were Catholics oppressed? Nope; but, they were kept from pulling the same crap in America they'd done in Europe up to a point. Ya'll just got your nose bent out of shape because on US soil you got the same treatment everyone else got - you're just another religion.
As I stated before, this is, and your response is all irrelevant to the real point. I wasn't talking about government, I was talking about the Roman Catholic church itself that is, in essence, fascist.