Brazil's crafty Senate boss helps keep Rousseff afloat

By Anthony Boadle BRASILIA (Reuters) - Renan Calheiros took an Air Force jet to get hair implants and was accused of letting a lobbyist pay child support to a journalist he had an affair and a child with. President Dilma Rousseff, her government beset by economic and corruption crises that some believe could cost her the presidency, is the latest to take his hand. With the power to stall legislation and conduct an impeachment of Rousseff that some opponents seek, Calheiros instead has dropped hi