January 29, 2020
On Wednesday, January 29, 2020, the President signed into law:
H.R. 5430, the "United States-Mexico-Canada Agreement Implementation Act," which implements the United States-Mexico-Canada (USMCA) Agreement.
Donald J. Trump, Bill Announcement Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/335393