If those are the only three ports, why in the world would bob Clark open a facility in Houston?
When exporting cargo ( which this will be considered) shipping is much different. I know for a fact I can export from Louisiana through New Orleans, Lafayette, Alexandria, and here locally in New Iberia. But none of those places can tell me how to get started.
And as long as the plane don't touch down in another state before leaving the country them there is nothing illegal about it :/