Given Louisiana's shoreline and recent events, I don't understand how you can't.
The Oil Industry alone in Louisiana accounts for over 200,000 jobs, dwarfing the economic impact of a very strong seafood related industry. When you add in chemical refineries and other resource extraction, you're easily up to 20% of the entire state's economy.
I'm not saying it's right. I'm just saying those are the facts. A statewide Louisiana officeholder can't really afford to play nice with the EPA.