What Trump could do is work out a deal with the Mexican government. We won’t stop your money transfers back to Mexico if you let our agents operate 150 yards into Mexico. We intercept the illegals inside Mexico and hold them in tent cities, then ship them back to Southern Mexico with special US military convoys. If this drug cartel government of Mexico isn’t dealt with, we will be at war down there in the not too distant future.
That would be a perfect solution!