Unlike NSA's collection of phone records under a court order, it is clear to me that certain surveillance activities have been in effect for more than a decade and that the Senate Intelligence Committee was not satisfactorily informed. Therefore our oversight needs to be strengthened and increased .... Unless the United States is engaged in hostilities against a country or there is an emergency need for this type of surveillance, I do not believe the United States should be collecting phone calls or emails of friendly presidents and prime ministers. The president should be required to approve any collection of this sort.
-- Senate Intelligence Committee Chairman Dianne Feinstein (D-Calif.), statement on reports the National Security Agency has conducted surveillance on leaders of foreign countries, 28 October 2013