Washington Post:

…Specter’s maverick streak appears as strong as ever. He has signaled plans to ask the nominee pointed questions, and he endorsed a Democratic call for the Bush administration to release more documents related to Roberts. Moreover, Specter says he will use the hearing as a forum to rebuke the current Supreme Court — particularly conservative Chief Justice William H. Rehnquist — for “insulting” Congress in rulings in which Roberts played no role.