William Welch II is the former Chief of the Public Integrity Section of the United States Department of Justice (DOJ). Welch is noted chiefly for his role in the prosecution of former Alaska Senator Ted Stevens and the prosecution of U.S. intelligence community whistleblowers for alleged leaks to the press.
Welch resigned on April 16, 2012, amid allegations that the DOJ Public Integrity Section had purposefully hid exculpatory evidence in the case against Stevens.