12 U.S.C. § 4221
Filing of confidential declarations by private persons identifying specific assets
After the United States obtains a final judgment or settlement in any action referred to in section 4201 of this title, any person may file a declaration identifying specific assets which might be recovered by the United States in satisfaction of that judgment or settlement.
A declaration under subsection (a) shall be filed with the Attorney General of the United States or with an agent designated by him for receiving declarations under this section.