Biden removed executive orders Trump had in place, that kept migrants in Mexico, Trump had Mexico control their southern. Those two executive orders reduced illegal migration. Then Biden stopped the wall construction. It wasn’t just a “wall”, there was an integrated road system that made border control easier with a technology system to be added. Most of this is Biden’s fault, he just refuses to realize it! I do view this article with skepticism since it is probably from anonymous sources and sensational claims sell books!