Venezuelan opposition leader Juan Guaido, who many nations have recognized as the country's rightful interim ruler, attends a session of Venezuela's National Assembly in Caracas, Venezuela February 13, 2019. REUTERS/Manaure Quintero

CARACAS (Reuters) - Venezuela’s opposition-run congress named new transitional boards of directors to state oil company PDVSA and its U.S. subsidiaries including refiner Citgo Petroleum Corp on Wednesday.