We may require additional evidence and/or a bond of indemnity, with or without surety, in any case where we determine it necessary to protect the interests of the United States. [67 FR 64286, Oct. 17, 2002. Redesignated at 70 FR 14943, Mar. 23, 2005. Redesignated at 70 FR 57444, Sept. 30, 2005]