[Code of Federal Regulations] [Title 31, Volume 2] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 31CFR357.40] [Page 421] TITLE 31--MONEY AND FINANCE: TREASURY CHAPTER II--FISCAL SERVICE, DEPARTMENT OF THE TREASURY PART 357_REGULATIONS GOVERNING BOOK-ENTRY TREASURY BONDS, NOTES AND BILLS HELD IN LEGACY TREASURY DIRECT--Table of Contents Subpart D_Additional Provisions Sec. 357.40 Additional requirements. In any case or any class of cases arising under these regulations, the Secretary of the Treasury (``Secretary'') may require such additional evidence and a bond of indemnity, with or without surety, as may in the judgment of the Secretary be necessary for the protection of the interests of the United States.