It could be elements of the caravans spreading out to other areas of the border - maybe the City of Tijuana, the Mexican Federal Government, or caravan operators got them some bus tickets from Tijuana. Numbers have reportedly dropped quite a bit for the caravan in Tijuana over the weekend (by thousands), as they moved their camp. It is a lot more likely that they would go to El Paso to cross over, than they would be to go back home.
If we just build a little new border barrier, it will make little difference to the big picture, as flows can easily shift.
We need a few hundred miles to button up all the urban areas along the border, and a hundred miles in the Rio Grande Valley, to really change the nature of the situation.
These are ILLEGAL ALIENS not MIGRANTS.
Once they get in, they’re in.