or possession of the United States, and any tribal organization (as defined in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 450b )). (9) Streamlined sales and use tax agreement The term Streamlined Sales and Use Tax Agreement means the multi-State agreement with that title adopted on November 12, 2002, as in effect on the date of the enactment of this Act and as further amended from time to time. 5. Severability If any provision of this Act or the application of such provision to any person or circumstance is held to be unconstitutional, the remainder of this Act and the application of the provisions of such to any person or circumstance shall not be affected thereby. 6. Preemption Except as otherwise provided in this Act, this Act shall not be construed to preempt or limit any power exercised or to be exercised by a State or local jurisdiction under the law of such State or local jurisdiction or under any other Federal law.