U.S. Sen. Lisa Murkowski , an advocate for repealing a 40-year-old ban on oil exports, said she wants to know why no oil is getting to Mexico under a swap deal. The U.S. Commerce Department in August granted a request from Mexican energy company Petroleos Mexicanos, known also as Pemex, to swap as much as 100,000 barrels of U.S. crude oil per day for refining. Legislation enacted in response to an oil embargo enforced in the 1970s by Arab members of the Organization of Petroleum Exporting Countries forbids the export of crude oil. The Commerce Department agreement requires Mexico to refine the crude oil at home and forbids re-export to other nations. Similar agreements are […]