Being Catholic and conservative I’d say the main difference is capitol punishment. This is not a trivial matter but the one divergence is pretty small when compared to the differences with liberal philosophies which are quite numerous.
I like to point out that a recent survey of religious affiliation on Freerepublic showed that Catholics are by far the largest faith of your fellow FREEPERS.
Capitol punishment IS NOT a defined doctrine, but the libs and MSM act like it is.
Bl. John Paul II wrote that given the advancement of civilization, and well as the penal system, capitol punishment should not be neccessary in order to protect society. However, he stopped short of declaring a doctrine. And those are the facts.