Solve two problems at once; build factories and facilities in South America (Guatemala, Mexico, Nicaragua etc.) and import the goods from there, plus give the local populations a reason to stay there and build their own countries up because their economies and standard of life improves. The biggest problem in most of these countries is corruption at all levels of government (the worst being at the local level because it goes under the radar). Make the investments contingent on oversight of where the money is going.
[Solve two problems at once; build factories and facilities in South America (Guatemala, Mexico, Nicaragua etc.) and import the goods from there, plus give the local populations a reason to stay there and build their own countries up because their economies and standard of life improves.]
https://www.reuters.com/article/economy-mexico-wages-idUSL2N0CR1TY20130404