A senior U.S. official told The New York Times that Kushner did not invite Ambassador Roberta Jacobson to meetings with Mexican President Enrique Peña Nieto and Mexican Foreign Minister Luis Videgaray.

Jacobson, who is among the State Department’s top Latin American experts, announced last week she would step down from her post in May after serving in the U.S. government for 31 years.

Christopher Sabatini, a lecturer on international relations at Columbia University, told the Times that Kushner’s meeting was “not the way foreign policy normally is, or should be, conducted.”

“The sending of the president’s son-in-law — someone with no experience in Mexican-U.S. relations — is another example of the de-professionalization and personalization of diplomacy that will hurt U.S. interests and leverage in the region,” he told the Times.