48 C.F.R. § 4.2002
Section 1634 of Division A of the National Defense Authorization Act for Fiscal Year 2018 (Pub. L. 115-91) prohibits Government use on or after October 1, 2018, of any hardware, software, or services developed or provided, in whole or in part, by a covered entity. Contractors are prohibited from—
[83 FR 28143, June 15, 2018, as amended at 88 FR 69510, Oct. 5, 2023]