Thanks for the link to that article. It also does not say how tens of thousands of Haitians and Cubans managed to find their way to Central America and Southern Mexico. It discusses how the Mexican government moved them north to the US border.
So just how did they get to Central America and Mexico?
Trump had such a good working relationship with Andrés Manuel López Obrador and now the US / Mexico relationship has turned to sh!t, just like everything else Biden touches.