02/04/1987
https://www.presidency.ucsb.edu...
"I am authorizing the Secretary of Commerce to determine when the Government of Canada begins to collect the export charge."
"This increase shall go into effect on December 31, 1986, and will terminate when the Government of Canada begins to collect the export charge on exports of certain softwood lumber products."
"Subpart B of part 1 of Schedule 2 of the Tariff Schedules of the United States is modified, with respect to products of Canada imported into the United States by adding an additional duty of 15 percen..."
"This agreement with the Government of Canada will enhance the ability of our softwood lumber industry to compete."