; or (2) a different treaty or agreement is already in effect that satisfies the requirements described in subsection (a). (e) Waiver The President may waive the prohibition in subsection (d) with respect to a particular new or newly amended agreement or treaty if— (1) two-thirds of the Senate first agrees to a joint resolution of approval in support of the new or newly amended agreement or treaty; and (2) the President certifies to the appropriate congressional committees that the agreement or treaty is in the national security interests of the United States and does not harm the deterrent capability of the United States. 6. Definitions In this Act: (1) Appropriate congressional committees The term appropriate congressional committees means— (A) the Committee on Armed Services, the Committee on Foreign Relations, and the Committee on Appropriations of the Senate; and (B) the Committee on Armed Services, the Committee on Foreign Affairs, and the Committee on Appropriations of the House of Representatives. (2) New START Treaty the term New START Treaty means the Treaty between the United States of America and the Russian Federation on Measures for the Further Reduction and Limitation of Strategic Offensive Arms, signed April 8, 2010, and entered into force February 5, 2011.