Key Mexican oil refineries are shut down, Mexico’s president said on Thursday, as the government’s drive to stamp out gasoline theft from pipelines is pressuring the distribution of supplies from terminals across the country.  Declining output at refineries owned and operated by state-run oil company Petroleos Mexicanos, known as Pemex, is forcing the firm to meet demand by relying more heavily on imported motor fuels, which President Andres Manuel Lopez Obrador has pledged to cut once more gasoline and diesel can be produced at home. “There are (Pemex) refineries that have been shut down for a while,” said Lopez Obrador at his morning news conference. The company’s 177,000 barrel per day (bpd) Madero refinery has not produced fuel in […]