Don’t type this out like we’re stupid, all of these paragraphs of already obvious information. Living in New York- One half of my family ancestry is Florida by way of DR, Bahamas. You’re not saying anything new with this information or enlightening that is not known.I respectfully disagree. This trend of educated immigrants either being a significant or greatly represented in the immigration pool is a trend that has long stopped
At least in African countries post-independence of the 1960s, govts. were relatively stable and sent their best and the brightest to study in the West and finance their education. When govts started failing for multiple reasons (bad governance, civil wars, foreign meddling yes including the US etc...), the vast swath of the populace (educated and uneducated) felt the effects and wanted to get out of the country. Of course in any society, the non-elites outnumber the elites significantly.
This has been the trend. However, I have lived and work in many places around the world including African countries and know exactly what type of individuals show to the American embassies for visas. They are not by a vast majority the cream and the crop of that society. In addition, there is such a thing such As DV Lottery system which basically is an application where you fill out to get a permanent residency into the US. It is exactly that LOTTERY so meaning chance. The only requirements is that you do not have any communicable diseases (HIV included) and you have proof of that. The process costs like $200 ( a lot of money in that part of the world but manageable) There is not requirement for educational attainment (i.e some Canadian immigration policies). This is become a growing prevailing way for a lot of Sub-Saharan Africans to come into the United States outside of just their countries being incredibly unstable.
Secondly, people who have it good in their country do not move to another country so that they can start from the bottom in terms of being legalized and obtaining the right to live/work in a new country. It is a long and tedious process that takes YEARS. If I am a big deal in X country comfortable and certain of my position and standing in my own society why would I risk to PERMANENTLY settle into the unknown of a new country Y. The only way you risk that is what you are saying in the Texas border meaning you weren't the best and wealthiest in your country of origin.