In a noncriminal case in a U.S. District Court, a litigant (or a litigant's attorney) who presents any pleading, written motion or other paper to the court is required, under Rule 11 of the Federal Rules of Civil Procedure, to certify that, to the best of the presenter's knowledge and belief, the legal contentions "are warranted by existing law or by a nonfrivolous argument for the extension, modification, or reversal of existing law or the establishment of new law".[2] Monetary civil penalties for violation of this rule may in some cases be imposed on the litigant or the attorney under Rule 11.[3]