((a)) The Attorney General may investigate the official acts, records, and accounts of—
((1)) the United States attorneys, marshals, trustees, including trustees in cases under title 11; and
((2)) at the request and on behalf of the Director of the Administrative Office of the United States Courts, the clerks of the United States courts and of the district court of the Virgin Islands, probation officers, United States magistrate judges, and court reporters;
((b)) Appropriations for the examination of judicial officers are available for carrying out this section.