“For extra measure, [Daniel Patrick] Moynihan put another 'hold' on two other GOP favorites for federal courts of appeals, prompting White House counsel [Boyden] Gray made sure that [George H.] Bush knew that Moynihan had been blocking action on the appeals court nominations 'to extract a district court judge from us,' and he advised the president to sign the Sotomayor nomination but hold off making it official until the administration had gotten word that the two appeals court nominees were confirmed.”