Catholics Against Thompson (?)

Does news of Fred Thompson's lobbying work on behalf of the National Family Planning and Reproductive Health Association (in which he reportedly tried to lift federal restraints on abortion counseling) mean that pro-life Catholics should think twice before voting for him?  I'm not equating his lobbying work with the policy positions of the leading Democratic candidates, but his decision to accept that client raises questions about his dedication to the pro-life cause, doesn't it?