Amid the chaos and confusion that engulfed New Orleans after Hurricane Katrina struck, a congressman used National Guard troops to check on his property and rescue his personal belongings — even while New Orleans residents were trying to get rescued from rooftops, ABC News has learned. On Sept. 2 — five days after Katrina hit the Gulf Coast — Rep. William Jefferson, D-La., who represents New Orleans and is a senior member of the powerful Ways and Means Committee, was allowed through the military blockades set up around the city to reach the Superdome, where thousands of evacuees had been...