Simply put Trump must do this under the DPA and related authorities.He cannot tariff exports as it is explicitly forbidden under the Constitution to do so. However, he can ban them under emergency authorities and he must, right now.Allowing those exports means the dislocation over in the Middle East with energy supplies results in foreign interests bidding up energy resources on the open market and of course given the choice to export diesel and LNG at a higher price than it can be sold for here in the US that is exactly what has and will happen.Whether you agreed or not with the original decision to go into Iran the facts are that its not going to be over in a week and neither will.......(Click link to read more)