It's unclear exactly when she uttered her remarks, but Rep. Sheila Jackson Lee (D-TX) is featured in "Black Voter Suppression Blamed for Weak Katrina Response". She says:
"Watching family members and others cling to rooftops in Hurricane Katrina, I wonder whether or not the absence of attention [to the recovery effort] is attributable to the loss of a vote in 2000 and 2004... The pain of disenfranchisement is still very fresh for those African Americans who were shut out of the voting process in 2000. It was a sheer travesty. We know America is smarter and better than that... [In 1965 in Montgomery Alabama,] the Reverend Dr. Martin Luther King was attacked by state troopers, beaten and jailed ... This overt violation of human and civil rights, took place live on national television in front of the entire world, as did the tragedy of Hurricane Katrina. Who knows what [effect more African American] votes could have brought about in both of those instances... That is why we are so concerned about voting rights. They impact yesterday, today and tomorrow..."
She said that before the Congressional Black Caucus, and it might have been the day before Rep. Charlie Rangel pulled his "Bull Connor" bull.