I'll throw in this for fun. By making abortion legal and allowing ontological materialists (atheists, as Kerry alludes to them)to have abortions because they believe that there is no soul and no afterlife, do not liberals make other Americans subject to the propositional claims ( the "articles of faith") of a deranged non-Christian cult???
Don't know about deranged, but laws frequently make unwilling Americans subject to propositional claims. Furthermore, it is perfectly constitutional for a US Senator to vote his conscience, whether or not it happens to correspond to Church tenets.