The USA didn't start with illegal aliens arriving from anywhere because there wasn't any laws against people coming here, so it wasn't illegal.

"Only personal property borders matter and they must be fought with arms."

That's how the Native Americans thought and acted, that didn't work out for them and they ended up losing everything. Too much decentralization = death by a centralized force.

Same as how Walmart made tons of decentralized businesses go out of business. A centralized force with tons of people behind it will eventually take over a decentralized disorganized people, given a great length of time.