Very profitable war to wage on America. Send in your soldiers who exhaust our defenses, pillage our treasury, send all the booty back home, clear up all those nasty diseases using our free healthcare, and make some new friends while doing it. Not even a shot fired.
It is indeed a soft, but nonetheless effective invasion.
One of the bothersome things about Trump sending immigrants to sanctuary cities is that both our domestic and the SA MSM can describe such relocation in a way that advances their agenda.
Unbelievably, short of closing the border and hoping to spark Mexican government border enforcement, he doesn't have many options. He cannot detain them indefinitely nor can he promptly deport them. In this narrow context, he/we/the nation, is screwed.