Brazil prosecutor seeks probe into former president, senators

By Brad Brooks SAO PAULO (Reuters) - Brazil's top prosecutor on Monday asked the Supreme Court for permission to investigate an ex-president, two senators and the former head of a unit of the state oil company for alleged efforts to thwart the country's largest corruption probe. Prosecutor General Rodrigo Janot accused ex-President Jose Sarney, who now sits in the Senate, along with senators Romero Juca and Renan Calheiros of carrying out "political maneuvers" in a bid to quash the inquiry into