.... Put up a rope line and in Spanish say anyone crossing that line will be shot. Is that what you want...
There is no workable solution to stopping 5,000+ alien Invaders massed to cross the border except an impassable wall that is still a dream. Absolutely nothing.
We could build internment "asylum" centers all along the southern border. These could be pre built and have sanitary facilities and tents. Some could have FEMA trailers. As soon as the aliens cross we apprehend them and put them in the camps. They are processed and KEPT there until they are deported. That is a workable and simple solution. Handle this like a natural disaster. Also, as soon as we started doing this the word would get out and the horde would stop coming.