President Trump said in a social media post that he would impose tariffs and sanctions on Mexico if it does not comply with a treaty from 1944 to provide water to South Texas.

Mexico OWES Texas 1.3 million acre-feet of water under the 1944 Water Treaty, but Mexico is unfortunately violating their Treaty obligation. This is very unfair, and it is hurting South Texas Farmers very badly.

U.S. President Donald Trump on Thursday threatened Mexico with sanctions and tariffs over what he said was Mexico's non-compliance with an 81-year-old water treaty. "Mexico OWES Texas 1.3 million acre-feet of water under the 1944 Water Treaty,