In July, absolutely for the first time ever, Mexico reported “encountering” (apprehending, blocking, turning back, detaining) more migrants in its territory than U.S. Customs and Border Protection (CBP, which includes Border Patrol) reported encountering at the U.S.-Mexico border.

Citing a “restructuring process,” Mexico’s authorities say their reporting of September data will be delayed, but at least through August, the two countries’ migrant encounters remain nearly equal for the first time in history. And, of course, the U.S. figure includes Mexican citizens, and Mexico’s does not.

Much has been written about Mexico’s undeclared but vigorous policy of redirecting other nations’ migrants to the country’s south and cutting way back on humanitarian visas, even as detention and deportation have grown less frequent. It’s been called the “chutes and ladders” or “merry-go-round” policy, shipping people south when they try to come north.

A few sources: