That’s the point of this WSJ edit. It also has this:
Yet the facts are these. Global warming cannot credibly account for Katrina’s power: The Gulf Coast has been hit by powerful hurricanes from time immemorial; in 1900, 8,000 people perished in a category 4 storm in Galveston, Texas. The energy bill just signed by President Bush contains half a billion dollars in coastal restoration funds for Louisiana alone. The Army Corps’ much-maligned levees keep New Orleans safe from spring flooding, and its planned $700 million, 72-mile Morganza-to-the-Gulf of Mexico levee might have held Katrina at bay, were it not still at least a decade from completion.