The US will repel the invasion and take territory from the invaders. US will not agree to pull back until Mexico decides to build, and pay, for a wall to keep us out…and them in.
This one of many excellent points why the federal education (indoctrination) system MUST be disbanded and education returned to state and local levels. Making it harder to control young minds on a largescale and making education more in line with the needs and mores of the local community standards.