The problem today is as it has always been, SIN . The solution is what it has always been, Gods grace.
We can not make a goat a sheep, we can not change the unregenerate nature of the reprobate by forcing him to adhere to OUR morality . If men were saved by their own merits and "goodness" perhaps the approach of trying to enforce a Christian code of ethics on the reprobates might make sense. But if salvation rests on God and His grace alone, and if God is truly sovereign over all things making alliances with those with whom we are unequally yoked or praising the work of men or seeking alliances with unregenerate men for a social end is fruitless and sinful IMHO.
Remember in Genesis when Abram refused to take booty from the King of Sodom ? He did not want it said that the King of Sodom had any hold over him or a part of his fortune.
That was great wisdom, and something we should consider when making alliances. Even the reprobates can see the social issues among us, that gives them no spiritual standing with me..
While the Roman Catholic priesthood has entirely too many Sodomite priests, the Pope is certainly not any such thing. Such a comparison is offensive - he's a fellow Christian. He may hold what I believe to be aberrent doctrines, but he is most certainly not a man with "no spiritual standing."