The board of directors of Venezuela's state-run PDVSA this week ​ratified Asdrubal Chavez as head ‌of the oil company's U.S. subsidiaries PDV Holding, Citgo Holding and Citgo Petroleum, ​a document seen by Reuters showed, ​a decision that follows U.S. President ⁠Donald Trump's support of interim ​President Delcy Rodriguez's administration.