- Canada to impose 25% tariffs on nearly $30bn in US imports as trade war flares – live The Guardian US
- Trump imposes sweeping 25% steel and aluminum tariffs. Canada and Europe swiftly retaliate CNN
- Automakers brace for higher costs as steel and aluminum tariffs kick in NPR
- Trump administration live updates: Trade war with Canada escalates as U.S. tariffs on metals take effect NBC News
- Canada announces retaliatory tariffs on nearly $30bn worth of US imports The Guardian US