https://www.youtube.com/watch?v=a0PEz8CmMSc
This is why, despite all the doom and gloom politicians who like to get elected and have us carry them on our backs all the time, the USA shall always be one step ahead: we attract, ULTIMATELY, truly, the best and brightest... because our society is DYNAMIC enough in PARAMATERS --- think and do whatever the fuck you want and fuck all "authorities" who say THEY KNEW MORE AND KNOW BETTER and KNOW THE CORRECT WAY TO DO THINKING, etc...
That mindset leads to lot of problems, too, sure. But it also frees people from basic fear --- fear of nothing thinking a certain thought, about a certain "correct" idea, or ideology, because it "runs counter to the correct and wise leaders way of thinking, the only one allowed" --- and that freedom, ultimately, allows America to be ahead of the rest...
Year in, year out, generation after generation, we have millions of people finding their ways to our shores... most will only come to pick fruits and vegetables and do assembly work... but some are geniuses awaiting their time and their place... and MOST will, within a generation or two, produce good, educated, and hard working citizens to take the place of those who's gone on...
Ignore the fear mongering knuckleheads who want to "take America back and return it to what it was like" in the 1950s, 30s, 1880s, 1820s, or 1700s...