Those who can't can drive their pickup trucks!
There are sufficient buses to move the others over a couple of months without stressing the availability of buses.
I figured out that I could FLY all of them home to wherever they'd come with just the surplus passenger capacity ordinarily found in our commercial air fleet over a 6 month period of time.
NO ONE is talking about having them walk back to Mexico in the hot broiling Sun in June.
The use of the term "humane" is inappropriate.
No. We should send them home on high-speed rail! One of the good ones -- with a snack car.