Brazil, areawise, is roughly the size of the lower 48 with 60% of the population. It is rich in natural resources and energy independent. In other words, if 60 million or so Americans immigrated to Brazil, our population densities would be roughly identical. Do you suppose we would be welcome to encourage said immigration, starting with the 30 million plus who are here illegally?
I've heard that it is a lot easier for a Spanish speaker to learn Portuguese than to learn English. It would be the humane thing to do.