Another Form of War?

Vox has a thesis.

Immigration has always been war. Whether it was the Mongols migrating to India, the Germans migrating to Italy, the Goths migrating to Byzantium, the Normans migrating to England, the Europeans migrating to the Americas, the Japanese migrating to China, the Germans migrating to Eastern Europe, or the Jews migrating to Canaan, the result has always been military occupation, followed by the large-scale slaughter and suppression of the native population.

Hmmmm.

And there is a corollary:

And because immigration is war, open borders is surrender.

Hmmmmmmmmmmm, again.