pelican has been rescued and released back into the wild. >> you may not see this directly right now, but there is going to be an impact. >> reporter: not even the tip of the iceberg yet. >> no. it's going to be like almost in a sense like a domino effect. >> cnn's rob marciano on the scene for us, covering this disaster. in the gulf of mexico. when we come back, a major debate on elena kagan, president obama's supreme court nominee. did she do the right thing when she was dean at harvard law school in preventing the u.s. military from recruiting on campus because of the pentagon's don't ask, don't tell policy? stand by. the debate, right after this.