Elena Kagan is being grilled by the Judiciary Committee today. Republicans say they don’t plan to filibuster her confirmation to the Supreme Court, but they won’t rule it out either. What, if anything, have the hearings revealed about Kagan’s constitutional interpretations and judicial temperament? And, should the proceedings be a thorough exploration of a future justice’s beliefs, as Kagan herself has written? Or, so long as the nominee is capable of the job, should the Senate take politics out of the equation?