Choice 1: Shoot bullets
Choice 2: Do nothing
Are you saying those are the only 2 choices available to Trump?
I think Trump has 3 possible courses of action here.
Option One: Close the border immediately to all traffic and to all individuals other than US passport holders. Then issue an executive order banning wire transfers of money to Mexico. When the Mexican elites feel us standing on their economic air hose, they’ll break this up.
Option Two: Deploy our high-tech crowd control devices that use microwaves and hypersonics and fire them from black helicopters over the mob. From the reported effects of these weapons they will disperse pretty quickly.
Option Three: Draw a perimeter line say 100 miles into Mexico then take out bridges and bomb crater any road north of that line.
The way the laws are written they have to be granted temporary asylum. Catch and detain is the only answer available now because of that. In order to detain temporary shelter must be provided and a tent city is the only answer at this point.
Sucks but it's the only answer for now other than catch and release. Is that what you want?