U.S.Tariffs on Energy Imports from Canada and Mexico take effect March 4 ow.ly/6Kik50Vaei7 #EnergyTariffs #USImports #CanadaEnergy #MexicoEnergy #CrudeOil #RefiningSector #OilMarkets #TradePolicy #USRefiners #GlobalEnergy #EnergyNews #TariffImpact