Oil prices edged up in volatile trade on Monday but closed at a one-month low on the expiration of a higher-priced contract, as the market digested U.S. President Donald Trump's planned imposition of tariffs on Canada,

The cost to heat a home with oil this winter in the US Northeast would rise 8% if tariffs on Canadian energy products are enacted, an energy nonprofit estimates.

President Trump’s tariff on Canadian oil is expected to raise prices at the pump for U.S. consumers, if it takes effect as planned after a 30-day delay. Analysts told The Hill that the 10 percent