28 U.S.C. § 2711 : US Code - Section 2711: Application for warrant

Search 28 U.S.C. § 2711 : US Code - Section 2711: Application for warrant

A United States attorney or assistant United States attorney or a
person authorized by the Attorney General -
(1) upon his own affidavit or that of another credible person,
stating the existence of either of the grounds of attachments
enumerated in section 2710 of this title and
(2) upon production of legal evidence of the debt
may apply for a warrant of attachment to a judge, or, in his
absence, to the clerk of any court of the United States having
original jurisdiction of the cause of action.