<p>WASHINGTON -- Senators beginning what ought to be a protracted and exacting scrutiny of Harriet Miers should be guided by three rules. First, it is not important that she be confirmed. Second, it might be very important that she not be. Third, the presumption -- perhaps rebuttable but certainly in need of rebutting -- should be that her nomination is not a defensible exercise of presidential discretion to which senatorial deference is due.</p>
