Since a common argument in OTL against Catholic leaders was that they would listen more to the Pope than to the American people, we can be sure that they will be treated as if they were worse than Jews.With how Blacks, Japanese-Americans, and Hispanics are treated I balk at how the other “Great Other” aka Catholics are treated by the NatCorps and Longist South especially when you consider the fact that Al Smith is a Roman Catholic himself not mention Irish-American.
Partly on that basis I said that nothing associated with Italy or Spain would be adopted for NatCorp: for the NatCorps, they would be "popish shit", not something worthy of imitation.