Mexican migration authorities apprehended their fourth largest-ever monthly total of undocumented migrants in July, according to data posted in late August.

For the first time, fully half of those apprehended were not from Central America’s so-called “Northern Triangle” countries (El Salvador, Guatemala, Honduras). As recently as 2018, 87% of migrants came from those countries.

The increasingly non-Mexican, non-Central American nature of today’s migrant population was the subject of a story that the Associated Press, reporting from the U.S.-Mexico border, published yesterday.