A group of U.S. Senators are asking the FBI to explain a recent controversial National Security Letter sent to the Internet Archive. The Internet Archive was able to defeat the request with help from the EFF and the ACLU this past April. "The Internet Archive's case is only the third known legal challenge to NSLs, despite the fact that the the FBI issues tens of thousands a year -- more than 100,000 such letters were issued in 2004 and 2005 combined. But despite the lack of legal challenges from recipients at ISPs, telephone companies and credit bureaus, successive scathing reports from the Justice Department's Inspector General have found illegal letters and a willy-nilly culture within the bureau towards tracking their usage."