Time for one, two or three of the red states (Texas? Florida? Alabama? Mississippi?) to build completely NEW ports "from scratch", designed for container handling from the waterline up.
Dredge an entirely new deepwater port if need be.
It's foolhardy for the red states to continue to rely on blue states like California, Oregon, New York and Washington to handle this business. Just as the Chinese could "cut off" the United States now if they wanted to, when the red/blue "split" comes, I wouldn't expect the blue/communist states to remain friendly towards the red/traditional freedom states...