Canada's counter-tariffs take effect on various US goods

What happened

Canada's retaliatory tariffs on billions of dollars in US products took effect Tuesday, as a trade war between the North American neighbors heats up.

Summary assembled by rule from the sources below

Timeline

1. 04:03
   First appeared on France 24FFrance 24
2. 04:26
   Discussion started on Hacker NewsHHacker News

Sources