Literally, Bush better put it balls to the walls, or it'll hurt him in the polls. Remember his father lost many votes in the 1992 election simply because people felt he didn't "react" fast/strong enough after then-worst hurricane in American history in Andrew(at least in terms of financial property loss, back then $26 billion).
Anyway, when people estimate $50 billion to be the damages....I actually wouldn't be surprised if $75 billion would be more like it.