The Posse

One:
"Whoever, except in cases and under circumstances expressly authorized by the Constitution or Act of Congress, willfully uses any part of the Army or the Air Force as a posse comitatus or otherwise to execute the laws shall be fined under this title or imprisoned not more than two years, or both."
Two:
The current "President" told reporters that he might send up to fifteen thousand troops to the border with Mexico to deter a Central American migrant caravan slowly heading toward the United States. “We’ll go up to anywhere between ten thousand and fifteen thousand military personnel on top of Border Patrol, ICE and everybody else at the border,” his highness said.
How are these two items related? If you are wondering how the despot currently residing at 1600 Pennsylvania can get away with flying directly in the face of a federal law that has been on the books for more than one hundred forty years, then you're not alone. The most obvious response would be that the Congress is currently squarely in lapdog stage of existence coming just before a midterm election. Also, since the "President" continues to refer to the group of refugees from Honduras as "an invasion," he will most certainly whip enough dim minds into a frenzy that will allow the use of overwhelming force against a band of men, women and children who have walked hundreds of miles in order to find relief from the life they had been leading south of our border. 
If fifteen thousand troops were to be deployed on that border, that force would outnumber that currently deployed in all of Afghanistan. I suppose it does allow the tyrant-in-chief a chance to visit the troops in the field, something he hasn't done yet during his term. Since there aren't a lot of quality golf clubs in Afghanistan, I suspect. 
But getting back to the posse comitatus, how is this obvious assault on federal law being justified? The same way Brett Kavanaugh was confirmed. The same way laws have been broken by this administration for the past two years. The same way this nimrod got elected.