Trump threatens further tariffs on Canadian steel, aluminum, electricity, vehicles
1. Trump threatens new tariffs on Canadian steel and aluminum. 2. Ontario imposes 25% tariff on electricity exports to the U.S. 3. Potential costs of tariffs could reach $400,000 daily for U.S. states. 4. Increased tariffs may threaten Canadian automotive industry. 5. Trump suggests Canada might become a U.S. state due to trade tensions.