One example is HIAS who runs a fully staffed Darién Gap facility. As soon as there is a friendly administration to mass migration - they just flip a switch and we will have 10 millions of migrants. I don't want to come across as MAGA, because I am a non voter - the Republicans fuel the fire with forever wars. Its really two sides of the same coin. Companies benefit, because when there is no social cohesion workers are less likely to Unionize.
Even if we take 20 million, that's 75% of the total population of Venezuela or half of the population of Colombia. There simply are not enough people in South America for these kinds of numbers.