Brazilian lawmakers have scuffled on the floor of the legislature, pushing and shoving as they tried to block voting for the formation of a commission that will determine if impeachment proceedings against President Dilma Rousseff to a vote in the full house, AP reported. Speaker Eduardo Cunha is Rousseff's sworn enemy, and he allowed impeachment proceedings to be introduced into the lower house. Cunha on Tuesday wouldn't allow deputies to speak before the secret balloting to create the impeachment commission. That set off a ruckus, with members of Rousseff's Workers' Party physically blocking the vote for nearly half an hour. The voting eventually resumed, yet some parties pulled out of participating, effectively blocking the formation of the impeachment commission.