FILE - This Aug, 31, 2005 file photo shows a man pushing his bicycle through flood waters near the Superdome in New Orleans after Hurricane Katrina left much of the city under water. H

 

              FILE - This Aug, 31, 2005 file photo shows a man pushing his bicycle through flood waters near the Superdome in  New Orleans after Hurricane Katrina left much of the city under water. H
FILE - This Aug, 31, 2005 file photo shows a man pushing his bicycle through flood waters near the Superdome in New Orleans after Hurricane Katrina left much of the city under water. Hurricane responses by politicians mean avoiding disaster _ their own. Katrina’s legacy looms large as Isaac heads toward New Orleans and politicians from local Gulf Coast parishes to the White House and the Republican convention host city of Tampa, Fla., are calibrating their actions and their words, mindful of the sensitivities of how the public will perceive them. (AP Photo/Eric Gay, File)