They might not be directly elected, but they are political. If they weren't political we wouldn't divide them into liberal and conserative jusices. It seems like everyone already knows how they would 'interpret' any case involving abortion.

This doesn't seem to be such a problem in other countries. I don't really understand if that's because the judges are purposely appointed to be as partisan as possible, or whether the 'rules' are so badly written that they can be interpreted any way you like.