That’s easier than coming across our Southern Boarder.
I’ll say it again. Use our prison labor to gather and rehabilitate every small(old) Ford Fiesta and Ford Ranger. When Cuba falls ship them all to the country. Give them free gas from the Strategic Reserve assuming it’s full.
New(old) vehicles will prime the pump of their development and lock them into American autos before the other countries leapfrog ahead of us. Everyone seeing the change in transportation will know something good is going on.
People with talent and prestige can defect. The rest of them must either dare the high seas in crappy little “boats” or sell themselves into slavery to a cartel.