You've hit on the one thing that has truly irritated me about the white Catholic vote, and that's the hiding the white part behind the antiabortion mantra.  The culture war issues have served to do nothing more than hide the inherent racism of the Southern Baptist Convention.  That Roman Catholic bishops linked the US Church to the same ideology is sad, considering the anti Catholic hate rhetoric that was part and parcel of the history of the SBC and the KKK.