It’s my understanding that natural gas storage capability is limited, and that you can’t liquify it it for nothing. Still, it’s at least a twofer. It’s good for jobs, especially when the recoverable crude is limited, and the current accounts deficit, what used to be called our negative balance of trade. This energy sold overseas helps when uou have a fiat currency.
The key factor is that these facillities and the waters in the immediate vicinity will have to be better guarded than the average nuclear power plant. They'd be a likely terrorist target.
However, actual loading could conceiveably be done offshore at a terminal supplied by pipeline from the mainland to lessen risk for coastal populations (and increase the difficulty of terrorist attack).