Let's go beyond the strawman arguments. 50% of Americans voted for Algore, but this does not mean that Americans as a group are environmentalist wackos. If you wish to debate the RC catechism, that's fine, but those who sin and are in conflict with the teaching of the church should not be taken to represent the church or its teaching.
This isn't a strawman's argument. People somehow feel that God favors Christians and really want the very best for us. The Jews during Jeremiah's time felt the same way. If we want God's help we should look to our churches first. Paul didn't lead the Corinthians in social causes nor did Elijah tell the priest of Baal that their faith in Baal was the same as faith in God.
If we can't clean up our churches how the heck do we suppose sinners will every be stopped. In fact, if every single "Christian" in church were to vote against abortion then abortion would be abolished. As Barry McGuire aptly put it in one of his songs...
"We have million dollar churches and no one's on their knees."