Chrystia Freeland, Canada's Minister of Foreign Affairs, speaks to the media following NAFTA renegotiations in Montreal, Quebec, Canada, Jan. 29, 2018.
Chrystia Freeland, Canada's Minister of Foreign Affairs, speaks to the media following NAFTA renegotiations in Montreal, Quebec, Canada, Jan. 29, 2018.

Canada struck back at U.S. steel and aluminum tariffs on Friday, vowing to impose punitive measures on C$16.6 billion ($12.63 billion) of American goods and unveiling a C$2 billion aid package for affected industries
and workers.

Foreign Minister Chrystia Freeland told a news conference the tariffs would come into effect on July 1.