A person who files a false claim or makes a false or fraudulent statement in a claim against the United States may be liable to a fine of not more than $10,000 or to imprisonment of not more than 5 years, or both (18 U.S.C. 287-1001), and, in addition, to a forfeiture of $2,000 and a penalty of double the loss or damage sustained by the United States (31 U.S.C. 231).