Mexico's federal government is negotiating with its northern states to send more water to the United States, the country's president said on Tuesday, after its historic shortfall led President Donald Trump to threaten tariffs and sanctions.

Relief could be on the way for South Texas farmers facing a crippling water shortage. On Friday, Mexican President Claudia Sheinbaum said the country would make “an immediate water delivery“ to Texas farmers.

President Trump has threatened to slap new tariffs on Mexico for failing to deliver water under a decades-old treaty. But climate change has decimated river flows.