U.S. Ambassador to Mexico Roberta Jacobson is resigning.
Jacobson is now added to a growing list of State Department officials leaving their posts under the Trump administration.
Things have been tense between Mexico and the U.S. President Trump continuously insists the former pay for a so-called border wall and threatens to end U.S. involvement in the North American Free Trade Agreement.
Mexican diplomats reportedly began discussing policy largely with Trump's senior adviser and son-in-law Jared Kushner rather than Jacobson.
Jacobson took on the role in 2016 after being appointed by former President Barack Obama. Her departure follows Thomas Shannon Jr., the third-highest ranking department official who said he was stepping down last month. U.S. Ambassador to Panama John Feeley resigned this year citing irreconcilable differences with Trump.