Brazil's Senate pressed ahead with the impeachment process against President Dilma Rousseff on Monday, despite a decision by the lower house's interim speaker to annul it earlier in the day, according to Reuters. The head of the Senate, Renan Calheiros, said he had rejected the lower house interim speaker's decision and that a vote in the upper house on whether to put Rousseff on trial would continue as scheduled. The Senate is expected to vote this week on whether it will try Rousseff for breaking budgetary laws. If it decides in favour of doing so, Rousseff will immediately be suspended for up to six months as the trial proceeds.