From The Government Is NOT Charity Department:

Sun-Sentinel: Frauds, schemes and errors related to Katrina cost U.S. taxpayers $2 billion

WASHINGTON · Among the many superlatives associated with Hurricane Katrina can now be added this one: It produced one of the most extraordinary displays of scams, schemes and stupefying bureaucratic bungles in modern history, costing taxpayers up to $2 billion.

Do I hear $3 billion? $3 billion? 3? $3 billion to the man in the red, white, and blue! Do I hear $4 billion?