The tragic oil spill in the Gulf has led me to look at the Oil Pollution Act, which Congress passed in 1990 in the wake of the Exxon Valdez spill. It's apparent that the liability limit set in that legislation, $75 million, is laughably small. With estimates that the oil spill off the Gulf Coast may be the costliest in American history -- far more than $75 million, when you factor in lost business revenues from fishing and tourism, natural resources damages, and lost local tax revenues -- I have introduced legislation, the Big Oil Bailout Prevention Act, to raise …