; or (C) the use of such services is inconsistent with international agreements for international collaborative efforts relating to science and technology; or (2) the Secretary of the Air Force determines that the use of services from United States commercial providers is inconsistent with national security objectives. (c) Agreements with foreign entities Nothing in this section shall prevent the Administrator from planning or negotiating agreements with foreign governmental entities for the provision of support services to be carried out in outer space. . (b) Conforming amendment Subchapter II of chapter 501 of title 51, United States Code, is further amended by adding at the end the following: 50118. Commercial provision of services. . 503. Commercial in-space infrastructure (a) In general Subchapter II of chapter 501 of title 51, United States Code, is further amended by adding at the end the following: 50119. Commercial in-space infrastructure (a) In general In planning and carrying out space exploration missions, the Administrator shall, to the greatest extent practicable, make use of commercial in-space infrastructure to support such missions. (b) Commercial in-Space infrastructure In this section, the term commercial in-space infrastructure means infrastructure that is— (1) owned, managed, or built by a United States commercial provider or through a public-private partnership with a United States commercial provider; and (2) located more than 320,000 kilometers from the Earth’s surface. (c) Exceptions The Administrator shall not be required to use commercial in-space infrastructure if, on a case-by-case basis— (1) the Administrator determines that— (A) cost-effective infrastructure that meets specific mission requirements would not be reasonably available from United States commercial providers when required; (B) the use of commercial in-space infrastructure poses an unacceptable mission risk