; and (2) a notice that— (A) the person is not engaging in the activity that was the basis for the sanctions or has taken significant verifiable steps toward stopping the activity; and (B) the President has received reliable assurances that the person will not knowingly engage in activity subject to sanctions under this part in the future. 237. Exception relating to activities of the National Aeronautics and Space Administration (a) In general This Act and the amendments made by this Act shall not apply with respect to activities of the National Aeronautics and Space Administration. (b) Rule of construction Nothing in this Act or the amendments made by this Act shall be construed to authorize the imposition of any sanction or other condition, limitation, restriction, or prohibition, that directly or indirectly impedes the supply by any entity of the Russian Federation of any product or service, or the procurement of such product or service by any contractor or subcontractor of the United States or any other entity, relating to or in connection with any space launch conducted for— (1) the National Aeronautics and Space Administration; or (2) any other non-Department of Defense customer. 238. Rule of construction Nothing in this part or the amendments made by this part shall be construed— (1) to supersede the limitations or exceptions on the use of rocket engines for national security purposes under section 1608 of the Carl Levin and Howard P. Buck McKeon National Defense Authorization Act for Fiscal Year 2015 ( Public Law 113–291 ; 128 Stat. 3626; 10 U.S.C. 2271 note), as amended by section 1607 of the National Defense Authorization Act for Fiscal Year 2016 ( Public Law 114–92 ; 129 Stat. 1100) and section 1602 of the National Defense Authorization Act for Fiscal Year 2017 ( Public Law 114–328 ; 130 Stat. 2582)