This fall, as New Orleans continues to pick up the pieces after Katrina and the BP oil spill, voters will be deciding who can best lead them to a brighter future. The Vietnamese-American Republican who now represents Louisiana's majority Democratic and black second congressional district, is a self-described environmentalist. But he's struggling to hold on to his seat amidst criticism that he's cast too many Republican votes. Living on Earth's Mitra Taj reports on the incumbent, his challengers, and the city's post-disaster electoral priorities.