brasilia brazilian congress ready put vote late tuesday fiscal package key help government rebalance budget account regardless source political turmoil senate president eunicio oliveira say tuesday speak reporters oliveira say back deep investigation emergence new evidence suggest witness involve president michel temer corruption scandal might forthcoming crimes prosecutor general rodrigo janot say monday billionaire meat tycoon joesley batista fellow witness seem inadvertently record four-hour conversation discuss crimes cover plea deal bargain could lose immunity prosecution benefit brazil senate vote fiscal package tuesday oliveira say