Mexico, Honduras, Guatemala, El Salvador know that the day a terrorist slips across the U.S.-Mexico border and blows something up, the jig is up and the border will be sealed, depriving their countries of billions of dollars in yearly remittances.
They have a very strong incentive to prevent that from happening.
No. I think you may be mistaken. If we had a real president, you’d be right. But we don’t.