Reading an article on Zerohedge regarding the US border crisis, I couldn't help noticing the striking parallels between this and the mid-late Roman Empire:
Initially the Roman legions were comprised of Romans and other Latin people. But as the empire grew, the legions were increasingly recruited from foreign subjugated nations, and only had Roman officers. Eventually even the officers were from these other nations, and finally even the Caesar was from other nations, and did not even use Rome as his capital. Then the empire started to actively recruit what we could call "illegal immigrants" - Germanic tribes who had long been at war with Rome, but for various reasons (particularly invasion of their lands by the Huns) sought refuge in the Empire. And this was a crucial element in the civil wars that ultimately tore the empire apart.
There is nothing new under the sun.
ZeroHedge - On a long enough timeline, the survival rate for everyone drops to zero
www.zerohedge.com