It's nearly impossible for the average citizen to grasp the scale of ExxonMobil Corp.'s huge profits. In the quarter ended Dec. 31, the giant company made $10.7 billion, the equivalent of more than $115 million for every one of its 92 days, nearly $5 million each hour, more than $80,000 every minute, nearly $1,350 each second. All of us pay for the huge profits, but poor Americans living in colder regions and working people who must commute long distances are the ones whose contribution to ExxonMobil's profits are the most painful. The U.S. Energy Information Administration estimates that home heating...