The book outlines a Bannon-adjacent conspiracy theory that the Mexican government and elites in the United States are using immigrants in this country as a secret weapon.
Archived version: https://archive.is/newest/https://mexicosolidarity.com/mexico-conspires-to-invade-us-says-book-promoted-by-trump/
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So? That’s how you’re supposed to do it.
You see another country you want, like Ukraine or Greenland, and you take it.