(a) Whoever under oath (or in any declaration, certificate, verification, or statement under penalty of perjury as permitted under section 1746 of title 28, United States Code) in any proceeding before or ancillary to any court or grand jury of the United States knowingly makes any false material declaration or makes or uses any other information, including any book, paper, document, record, recording, or other material, knowing the same to contain any false material declaration, shall be fined under this title or imprisoned not more than five years, or both.

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Terms Used In 18 USC 1623

  • Conviction: A judgement of guilt against a criminal defendant.
  • Defendant: In a civil suit, the person complained against; in a criminal case, the person accused of the crime.
  • Evidence: Information presented in testimony or in documents that is used to persuade the fact finder (judge or jury) to decide the case for one side or the other.
  • Grand jury: agreement providing that a lender will delay exercising its rights (in the case of a mortgage,
  • Indictment: The formal charge issued by a grand jury stating that there is enough evidence that the defendant committed the crime to justify having a trial; it is used primarily for felonies.
  • oath: includes affirmation, and "sworn" includes affirmed. See 1 USC 1
  • Oath: A promise to tell the truth.
  • Statute of limitations: A law that sets the time within which parties must take action to enforce their rights.
  • United States: as used in this title in a territorial sense, includes all places and waters, continental or insular, subject to the jurisdiction of the United States, except the Canal Zone. See 18 USC 5
  • whoever: include corporations, companies, associations, firms, partnerships, societies, and joint stock companies, as well as individuals. See 1 USC 1

(b) This section is applicable whether the conduct occurred within or without the United States.

(c) An indictment or information for violation of this section alleging that, in any proceedings before or ancillary to any court or grand jury of the United States, the defendant under oath has knowingly made two or more declarations, which are inconsistent to the degree that one of them is necessarily false, need not specify which declaration is false if—

(1) each declaration was material to the point in question, and

(2) each declaration was made within the period of the statute of limitations for the offense charged under this section.


In any prosecution under this section, the falsity of a declaration set forth in the indictment or information shall be established sufficient for conviction by proof that the defendant while under oath made irreconcilably contradictory declarations material to the point in question in any proceeding before or ancillary to any court or grand jury. It shall be a defense to an indictment or information made pursuant to the first sentence of this subsection that the defendant at the time he made each declaration believed the declaration was true.

(d) Where, in the same continuous court or grand jury proceeding in which a declaration is made, the person making the declaration admits such declaration to be false, such admission shall bar prosecution under this section if, at the time the admission is made, the declaration has not substantially affected the proceeding, or it has not become manifest that such falsity has been or will be exposed.

(e) Proof beyond a reasonable doubt under this section is sufficient for conviction. It shall not be necessary that such proof be made by any particular number of witnesses or by documentary or other type of evidence.