The Trump administration on Wednesday announced a 60-day waiver of the Jones Act shipping law, temporarily allowing foreign-flagged vessels to move fuel, fertilizer and other goods between U.S. ports as soaring energy and agricultural prices strain supply chains amid the ongoing conflict in and around Iran.White House spokeswoman Karoline Leavitt said the waiver represents "another step to mitigate the short-term disruptions to the oil market as the U.S. military continues meeting the objectives of Operation Epic Fury."The waiver…