A group of Democratic senators, meanwhile, are calling for a probe into recent shareholder payouts by the Swiss company operating the oil rig that exploded before the spill. The company, Transocean, recently approved $1 billion in shareholder dividends. The senators want the Justice Department to probe whether the payments are legitimate when the company might be facing financial liability for the spill. The eleven victims of Transocean’s Deepwater Horizon rig explosion will be honored today at a memorial service in Jackson, Mississippi.