So, despite common sense, the considered opinion of college educated and newly hired Immigration Inspectors, Villa was not invading the United States, and/or was not "officially" invading the United States.
Of course the "official" answer to the question caused no end of controversy in this IOBTC class; it was basically rejected by the college educated trainees as being neither intellectually valid or in compliance with either the law or the 14th Amendment. The trainee Immigration Inspectors formally challenged the answer per FLETC and IOA regulations, but the challenge was rejected.
However the courageous trainee Immigration Inspectors stand as examples to all; challenging lies from the government unable or unwilling to stand by the truth, law and the Constitution. All know that Villa and his minions were an invading army. And it is clear as well that illegal aliens are not subject to the jurisdiction of the United States as their very presence is a challenge to the laws of the United States. But remember those who challenged the conventional wisdom of an ignorant bureaucracy.