Explanation, Please: It's Legal For Iraqis To Vote In Nashville, But It's Not Legal For New Orleaneans To Do Likewise?

Americans are really in a bad way when Iraqis in this country are granted greater ease to vote than evacuated Katrina victims. Iraqis get satellite polls; [mostly African-American] New Orleaneans outside of Louisiana get packets. It looks to me like Republican redistricting by another name; I thought the Bush administration's lack of follow-through with the federal money and resources to rebuild hardest hit neighborhoods was just incompetence. It may also be a premeditated election strategy.