I do want to say that I am strongly opposed to the ecumenical movement. I've spent much of my adult life fighting church battles against liberalism, and I covered the Cambridge Declaration conference fighting against Chuck Colson’s “Evangelicals and Catholics Together” statement.
When I speak of cooperating with Roman Catholics, it is only and exclusively in the sphere of the civil magistrate. I affirm what Heidelberg Catechism Q&A 80 says about the Roman Catholic Mass. I assume that Rick Santorum affirms what the Council of Trent says about my Reformed theology.
Reformed Christians dating back to Abraham Kuyper have believed cooperation with Roman Catholics in the sphere of the civil magistrate is acceptable. In no way whatsoever do I support cooperation with Roman Catholics in ecclesiastical activities — and a consistent conservative Catholic will say the same to me.
Got to go... just don't want to leave the impression I am a closet ecumenist.
I’m not an eucumenist either. But I am against constantly revisiting the old Reformation issues also, with an aim to fortifying the walls. Catholics and Evangelicals comes to an agreement to disagree on the central question of justification. As a Catholic, I like to point out that John Wesley pretty much came to the same point two hundred years ago. Looking at the struggle between the Calvinists and the Arminians, he just chose to punt, because the differences were intractable. He shared the English distaste for Rome, although he had almost no personal knowledge of Catholicism. Colson does and has pretty much said, that we differ profoundly, but recognize the good will of others who will make good alllies in our war with the common enemy.