The direct damages to New Orleans due to Katrina were small. Most damages were due to flooding.
The flooding was caused by levee failure.
Deomcrats governing New Orleans complained that s/he could not obtain Federal $ to maintain the levee.
Just found out that the main reason why the levee failed was because somebody planted many tree at the base of the levee. As these trees toppled due to the hurricane, the root balls weakened the base of the levee.
Whenever there is a hurricane, some trees always toppled. Didn't these democrats have the brains to trim the trees before Katrina?