March 12, 2020
On Thursday, March 12, 2020, the President signed into law:
H.R. 4998, the "Secure and Trusted Communications Networks Act of 2019," which prohibits certain Federal subsidies from being used to purchase communications equipment or services posing national security risks; and establishes a reimbursement program for the replacement of communications equipment of services posing such risks.
Donald J. Trump, Bill Announcement Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/341576