RIO DE JANEIRO, BRAZIL - APRIL 13: The corporate logo is displayed at Petrobras headquarters on April 13, 2016 in Rio de Janeiro, Brazil. A massive corruption scandal at the state-owned oil company has sparked a political crisis in Brazil. President Dilma Rousseff, who has not been linked to the corruption scandal, was chairwoman of the Petrobras board from 2003-2010. President Rousseff is now facing impeachment with an initial vote set in the lower house of Congress for Sunday. (Photo by Mario Tama/Getty Images)
