(a) For the purposes of this section- (1) "judicial official" means: (A) a Justice or judge of the United States, as defined by section 451 of this title; (B) a judge of the District Court of Guam, the District Court of the Northern Mariana Islands, or the District Court of the Virgin Islands; (C) a Director of the Administrative Office of the United States Courts, after he or she has filed a waiver under subsection (a) of section 611 of this title; (D) a Director of the Federal Judicial Center,