27 CFR 24.149: Corporate surety.

(a) Surety bonds required by this part may be obtained only from corporate sureties which hold certificates of authority from and are subject to the limitations prescribed by the Secretary as set forth in the current revision of Treasury Department Circular 570, Companies Holding Certificates of Authority as Acceptable Sureties on Federal Bonds and as Acceptable Reinsuring Companies.

(b) Treasury Department Circular 570 is published in the Federal Register annually on the first business day in July, and supplemental changes are published periodically thereafter (see https://www.federalregister.gov). The most recent circular and any supplemental changes to it may be viewed on the Bureau of the Fiscal Service website (see https://fiscal.treasury.gov).