They made a mistake, they cleaned it up to pristine condition (cost: Multi Millions).
WHAT ELSE DO YOU WANT???
And I would remind you, crude is a NATURAL element that oozes from the ocean floor in much larger quantities than that spill. To think we can control Mother Nature is laughable.
(BTW as a result of Valdez, oil transporters now pay BILLIONS of dollars to insure this will never happen again - as dictated by the U.S. Government.)
If you don't think enough is being done, I hope you're riding a horse.
And for the record, NO new refineries have even been built in the U.S. in at least 15 yrs. due to environmental opposition and over-regulation. If you want an example of how that affects the consumer, just look to CA, which refused to build new power plants. They ended up over-paying for power, had rolling brown-outs and are paying the penalty for their refusal to accept a reasonable environmental policy.
Oil companies are investing offshore where the business climate is more condusive to exploration and production of resources. ANWR is an excellent example of what happens when hyper hysteria takes over free market. We WILL reap what we have sown and it won't be pretty.
Now turn off your computer, and all that air conditioning you're using because oil also powers electricity. The enviro-Nazis have successfully created a visceral hatred of Big Oil and too many are buying into that dangerous concept, including some conservatives.
Look at the difference in cost between a bottle of designer water vs the same amount of commercially marketed oil. Then tell me why anyone in their right mind would want to stay in that field!