Tomas De Leon, foreman of the Hidalgo County Irrigation District #3 pump station, looks out over a canal that feeds water from the Rio Grande, Tuesday, Sept. 14, 2021, in Hidalgo, Texas. Under a 1944 treaty, Mexico and the U.S. share water from the Rio Grande for use in agriculture, industries and households. Since then, the border cities of McAllen, Brownsville, Reynosa and Matamoros have ballooned — along with their water needs. (AP Photo/Eric Gay)