On May 31, 2018, the United States (U.S.) announced tariffs on imports of certain steel and aluminum products from Canada at the rates of 25% and 10%, respectively.

https://www.fin.gc.ca/access/tt-it/cacsap-cmpcaa-1-eng.asp

Taking into consideration feedback received from Canadians through over 1,000 submissions during public consultations, on July 1, 2018, Canada will impose countermeasures (surtaxes) against C$16.6 billion in imports of steel, aluminum, and other products from the U.S., representing the value of 2017 Canadian exports affected by the U.S. tariffs.

The list of products in Tables 1, 2 and 3 below were drawn from original lists released for public consultation on May 31, 2018.