One of Amy Welborn’s commenters had a very interesting post on liturgical music and some of the history involved. Bad liturgical music is nothing new or the fact that composers have been influenced by the secular music around them and have attempted using it for liturgical music. Reform of secular influenced liturgical music has happened in the past and will no doubt continue into the future. I don’t think that this problem is uniquely an American problem and the situation is Europe is less rosy than what I think the commenter intends.
Last month there was an article in a Scotland newspaper Composer damns happy-clappy din that called the music at Mass "cultural vandalism." The same article could easily have been written in response to the music at most Catholic churhes in the U.S.