Illegals: A Warning to Americans: Since ~2019, I have tracked caravans of illegals from So America to the US.

I interviewed them, followed them into cartel towns and jungles, and observed all that they were willing to do — sell themselves, go without food, steal, risk every kind of danger, make Faustian bargains, etc. — to get to the US.  - Larry Alex Taunton@LarryTaunton

They are tougher than Americans. 

Writing on the fall of Athens, historian Will Durant said, “Nations are born stoic and die epicurean.” That is, nations are born amidst struggle and hardship and collapse as seekers of pleasure...

• I remembered that Rome collapsed, not in a day, but over the course of centuries that accelerated into decades, as wave upon wave of uncivilized Germanic tribesmen, “illegals” so to speak, poured across the empire’s northern frontier and eventually sacked Rome itself... 

I saw them in the violence of Africa, the intrigues of the Middle East, and everywhere there is misery south of our border. 

Generally speaking, they are 

• a people inured to suffering (theirs or that of others), 
• are accustomed to death, 
• unaccustomed to the comforts Americans take for granted, 
• have lived in nothing but squalor, 
• do not share your views of private property or civil discourse, 
• view violence as a part of daily life, 
• lack even the most basic education, and 
• have little sympathy for the low pain threshold of Americans...