Louisiana would run the table with the control of that port.
The government could easily sieze control of all our ports. We'd also lose all our offshore drilling land.
They could basically do as they please. Considering they'd be the USA, the most powerful nation on Earth. We'd be a bunch of backwards rednecks either to racist or to ignorant to admit the president is not the anti-Christ. Or, God forbid, even admit he has been and will be a successful president.
You'd also have a rag-tag group of freedom loving rebels fighting to take their homes back. Not everyone in Louisiana is a far-right extremist.