Arthur Andersen LLP v. United States, 544 U.S. 696 (2005), was a United States Supreme Court case in which the Court unanimously overturned accounting firm Arthur Andersen's conviction of obstruction of justice in the fraudulent activities and subsequent collapse of Enron. The Court found that the jury instructions did not properly portray the law Arthur Andersen was charged with breaking. Even after the conviction was overturned, the damage to Arthur Andersen's reputation was such that it did not return as a viable business.