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...Charging 25% levies on oil and gas from the US's top two trading partners would spike gasoline prices in the Midwest, raise electricity costs along both US coasts and hammer profitability for America's refiners, among other effects, experts say.

While tariffs can be disruptive in any market, they threaten to be particularly troublesome for a North American energy industry that has been tightly integrated for decades and already largely favors US interests. ...