18 U.S.C. § 912 : US Code - Section 912: Officer or employee of the United States

Search 18 U.S.C. § 912 : US Code - Section 912: Officer or employee of the United States

Whoever falsely assumes or pretends to be an officer or employee
acting under the authority of the United States or any department,
agency or officer thereof, and acts as such, or in such pretended
character demands or obtains any money, paper, document, or thing
of value, shall be fined under this title or imprisoned not more
than three years, or both.