However, as a result of the Soviet troop withdrawal from Afghanistan in February 1989, President George H. W. Bush was advised a few months later to no longer certify that Pakistan was not involved in the development of nuclear weapons in accordance with the Pressler Amendment, which banned most economic and military assistance to Pakistan unless the President certified on an annual basis that "Pakistan does not possess a nuclear explosive device and that the proposed United States assistance program will reduce significantly the risk that Pakistan will possess a nuclear explosive device." The Pressler Amendment was subsequently invoked on 1 October 1990. The lease of the ship expired in March 1994 and she was returned to United States control that same month.