This part applies to all claims of indebtedness due and owing to the United States and collectible under procedures authorized by the Federal Claims Collection Act of 1966, as amended by the Debt Collection Act of 1982. The joint regulations and this part do not apply to conduct in violation of antitrust laws, tax claims, claims between Federal agencies, or to any claim which appears to involve fraud, presentation of a false claim, or misrepresentation on the part of the debtor or any other party having an interest in the claim, unless the Justice Department authorizes the Farm Credit Administration, pursuant to 4 CFR 101.3, to handle the claim in accordance with the provisions of 4 CFR parts 101-105. Additionally, this part does not apply to Farm Credit Administration assessments under part 607 of this chapter.