U.S. could reach deal with Canada that avoids oil and gas tariffs, energy secretary says

1. Possible U.S.-Canada oil tariff agreement could avoid increased energy prices. 2. Energy Secretary emphasizes ongoing negotiations about tariffs on energy imports. 3. Canada warns energy prices will rise if tariffs are enforced. 4. U.S. crude oil imports largely depend on Canada for heavy crude. 5. Current tariff uncertainty affects energy market stability and oil prices.