How could they not have thought about what to do once they passed the “legal limit”?
Apparently the U.S. detained 100,000 migrants on the Mexican border in February alone. [0]
[0]: https://www.reuters.com/article/us-usa-immigration-border-id...
Anywho, if we really "cared" about all the "bunch of kids" suffering in Mexico, we would have invaded Mexico and installed a "democratic" government years ago.
Now, I'm not sure about the total apprehension numbers as the above mentioned stat could be gamed by holding people instead of deporting them. When I was looking into this I couldn't find those (apprehension) numbers by year anywhere.