January 31, 2018
On Wednesday, January 31, 2018, the President signed into law:
S. 117, the "Alex Diekmann Peak Designation Act of 2017," which designates a mountain peak in the State of Montana as the "Alex Diekmann Peak".
Donald J. Trump (1st Term), President Donald J. Trump Signs S. 117 into Law Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/332146