Graças Foster as the Transportadora Brasileira do Gasoduto Bolivia-Brasil. In 1998, Foster was working for a Petrobras unit that was involved importing natural gas from Bolivia. During this time, she met Dilma Rousseff, who in October 2010, would be elected to serve as the first female President of Brazil. In 1998, Rousseff was a relatively unknown energy official, serving in Rio Grande do Sul in southern Brazil. Foster and Rousseff developed a lifelong professional relationship, based in their mutual support of the leftist Workers Party, which rose to power in 2002, resulting in the election of Luiz Inácio Lula da Silva as
Impeachment of Dilma Rousseff an expert, not as an evidentiary, witness, as ruled by Lewandowski, after Cardozo accused Oliveira of making a report based on a biased understanding. He denied this, saying that he only fulfilled a recommendation to adopt a "less tolerant" rule that came from TCU. Oliveira asserted that Rousseff broke budget laws in 2014 and also in 2015. In his status as informant, his complaints could not be considered as evidence, but as technical information. The next prosecution witness questioned, D'Avila Carvalho, asserted that Rousseff "disguised" the accounting and was responsible for delaying transfers to state banks. Cardozo tried to disqualify