How did the Central American refugee tide form?

The influx of Central American refugees reminds me of the Sino-American border, especially the present American wall. Can we stop these Chinese and American refugees? Can it be stopped? We don't know. But we can speculate why these people go to America.

In fact, it is hard to imagine that a developed country like the United States, a world hegemon, still has refugees on its mainland plate. I really don't understand it. Why? Didn't the United States lead NATO countries to win? It stands to reason that the United States can take these small countries as younger brothers and let them support themselves every day, so as to facilitate their various actions and achieve their various purposes. But America doesn't. There are many younger brothers in America, but these younger brothers have not completely become great with America.

What we can know is that due to the infiltration of American culture, more and more people know how valuable, convenient and good an American nationality is, so more and more people flock to the United States, hoping to find a job and a better life here. This is the imaginary America of these refugees. They want to enter and live in the United States.

Then who wants to leave their hometown? If life is good enough, why leave? As a result, the life of Chinese and American refugees is not satisfactory, the unemployment rate remains high, people can't find jobs, and they have heard that the neighboring United States is so beautiful, so they choose to immigrate, and there has been a wave of Chinese and American refugees.