The United States Senate has rejected by a two-thirds vote resolution to block the proposed sale of eight F-16 aircraft to Pakistan.
Lawmakers voted 71 to 24 against an attempt introduced by Republican Senator Rand Paul to prevent the sale under legislation known as the Arms Control Act, Dawn reported.
President Barack Obama's administration announced on February 12 that it had approved the sale to Pakistan of the aircraft, as well as radars and other equipment. It drew immediate criticism from India and concern from some members of Congress.
Republican Senator Bob Corker said he would use his power as the chairman of the Senate Foreign Relations Committee to bar the use of any US funds for the deal.
Paul had called Pakistan 'an uncertain ally' and other lawmakers expressed concerns about Pakistan's nuclear programme, commitment to fighting terrorist organisations and cooperation in the Afghanistan peace process.
The Senate debated the measure for an hour during which Senator Paul strongly urged other lawmakers to support his move.
The United States identified Pakistan as a key partner in its war against terror following the September 11, 2001, attacks and spent billions of dollars on military aid to help the country fight insurgents.