There is no doubt in my mind that the greatest hurdle the US bishops face is one of relevance. One can be a "culture  warrior" and stick your head in the sand or one can show true leadership and face the issues. Some issues are out of their hands but ways are available to soften the detrimental effects. Why some bishops cannot even go this far speaks volumes of their formation. 

Christ spoke many times of the sin of self-righteousness yet our clerics still have not learned the lesson.