My difficulty with Roe v. Wade is a legal rather than a moral one. I do not believe – and no one believed for 200 years – that the Constitution contains a right to abortion. And if a state were to permit abortion on demand, I would and could in good conscience vote against an attempt to invalidate that law, for the same reason that I vote against invalidation of laws that contradict Roe v. Wade; namely, simply because the Constitution gives the federal government and, hence, me no power over the matter.

Call for Reckoning - Pew Forum conference (25 January 2002). N.b. this speech was later modified into an article - God's Justice and Ours which repeats much the same points.