“Finally, an admission the problem is in MEXICO and not the United States.”
Exactly, except I’m not sure his politics will allow him to fix the problems in Mexico.
The problem of wholesale exodus was never meant to have been fixed, Mexico has much more to gain by NEVER allowing the lot of its poorest to improve. They either starve in place, or they flee with the lure of assistance from the drug cartels, who exploit them immediately, or the vague possibility the US will still admit them, regardless of various restrictions placed upon their entry to the US.