Corruptly obstructing, influencing, or impeding an official proceeding is a felony under U.S. federal law. It was enacted as part of the Sarbanes–Oxley Act of 2002 as a reaction to the Enron scandal, and closed a legal loophole on who could be charged with evidence tampering by defining the new crime very broadly. It later became known for its use as a charge against defendants associated with the 2021 U.S. Capitol attack for attempting to obstruct that year's Electoral College vote count.