The district attorneys of several counties served Alorica with an investigative subpoena to produce records regarding it debt collection practices and in particular with respect to its collections for a national bank. Held, the subpoena was properly enforced. That Alorica claims not to be a debt collector within the meaning of the Rosenthal Fair Debt Collection Practices Act is no reason not to enforce the subpoena since the regulatory officials (the DAs) have the right to subpoena records to determine for themselves whether Alorica is a debt collector. Though state officials can’t exercise visitorial powers over a national bank, that rule doesn’t immunize Alorica from turning over its records regarding its activities on behalf of a national bank.