payload on board the ISS. (4) The United States flight of a crew member aboard the ISS on a commercial basis wherein their time is available for purchase by ISS users. (5) A non-U.S. entity, not currently covered by the ISS Intergovernmental Agreement, notwithstanding other provisions of law, purchase or acquire a presence on or services from the ISS. (d) ISS transition strategy Not later than 180 days after the date of the enactment of this Act, the Administrator of the National Aeronautics and Space Administration shall deliver to the Committee on Science, Space, and Technology of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a strategy that— (1) provides clear guidance on how the National Aeronautics and Space Administration will ensure a stepwise transition to an eventual successor platform consistent with the ISS Transition Principles specified in the International Space Station Transition Report issued pursuant to the section 50111(c)(2) of title 51, United States Code, on March 30, 2018