Brazil's government on Thursday filed a motion with the Supreme Court to annul the upcoming impeachment vote against President Dilma Rousseff, arguing that the process had been "contaminated." It was the latest volley amid weeks of legal wrangling over a process in Congress that has exposed deep divisions in Latin America's largest country, AP reported. The lower House of Deputies is slated to vote Sunday on whether to impeach Rousseff for breaking fiscal rules. Solicitor General Jose Eduardo Cardozo said that Eduardo Cunha, speaker of the lower chamber and a long-time nemesis of Rousseff, had presented the impeachment push in such a way that went beyond the actual accusations. Cardozo made the same claim about the report submitted to the special committee, which voted on Monday to send the measure to the full body. He said discussion included the overall political crisis, the recession and a sprawling corruption probe at state oil company Petrobras. "We are not talking about the merits of impeachment" but rather the process, Cardozo told reporters.