Protestants Wouldn't Fare Well under Integralism
Some Protestants are flirting with the political philosophy of integralism, which grows out of Catholic political theory in which the church rules the state, exercising coercive power for the supernatural good. That includes punishing heretics. Such as Protestants. In an integralist state, non-Catholics must at best be second class citizens, as a study of the movement makes clear.
Source: patheos.com