FILE - In this Aug. 7, 2014,file photo, Brazil's President Dilma Rousseff and former Brazilian President Luiz Ignacio Lula da Silva attend an election campaign rally in Sao Paulo, Brazil. A convicted black market money dealer who turned state’s evidence told lawmakers on Tuesday, Aug. 25, 2015, that President Rousseff and her predecessor, former President Lula da Silva, knew of the sprawling corruption kickback scheme that has engulfed state-run oil company Petrobras. (AP Photo/Andre Penner,File)