From the Washington Post via Matt Yglesias via This Modern World:
A Republican planning document provided to The Washington Post described the need to avoid disclosing the nominee's "personal political views or legal thinking on any issue."
So... the Congress is supposed to make a decision on someone who will sit on the Supreme Court... minus any information about that person's "legal thinking".
WTF are they supposed to make a decision on the nominee on, then? Horoscope? The color of their eyes? Flipping a coin?
If a person has a lifetime position deciding the Constitutionality and validity of law, call me crazy, but I'd think their views on legal philosophy would be a valid question.