In northern Mexico, migrants stuck at the U.S. border waiting to apply for asylum are facing increasingly desperate conditions. Temperatures in the border city of Nuevo Laredo soared to nearly 110 degrees on Wednesday.

Carmen Sarmiento: “We need to be drinking cold beverages frequently to adjust our body temperature. But the rest of the day we feel low in energy, dehydrated. My daughter’s lips are chapped even though I give her hydration solutions and lip balm. She’s still quite affected.”