Hours after President Donald Trump threatened Mexico with additional tariffs over a massive water debt, that country’s president publicly vowed to make a substantial payment soon. Under a 1944 treaty, Mexico must send 1.75 million acre-feet of water to the U.S. from the Rio Grande every five years, and the United States is to pay Mexico 1.5 million acre-feet of water annually via the Colorado River out West. The current five-year cycle ends in October and Mexico, so far, has paid only 512,604 acre-feet of water to the United States — about one-third of what it owes — according to the latest IBWC data published Friday. … On Friday morning, Mexican President Claudia Sheinbaum Pardo said her country doesn’t have enough water to give to the United States but will make payments.

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