Trump tariffs on Canada could jeopardize oil and gas exports to U.S., says trade chief

1. Canada threatens retaliation against potential US tariffs impacting energy exports. 2. Trump's proposed tariffs could raise prices in the US significantly. 3. Canada bought 70% of its military hardware from the US, indicating strong trade ties. 4. Canada looks to diversify trade partnerships globally to reduce reliance on the US. 5. Past tariff conflicts between the US and Canada suggest possible economic repercussions.