As the Trump administration’s crackdown on Harvard’s student visas plays out in court, Secretary of State Marco Rubio has opened another investigation into the leftist school’s international visa program, and they will be interviewing university staff as part of the investigation.

Here’s more via the New York Times:

The Trump administration has opened a new investigation into Harvard University’s compliance with a government-run visa program for international students and professors, targeting the elite college with the third aggressive action since the two sides restarted talks to end their acrimonious dispute.

Secretary of State Marco Rubio notified Dr. Alan M. Garber, the president of Harvard, of the investigation in a letter on Wednesday, according to a copy of the correspondence reviewed by The New York Times.

Mr. Rubio did not refer to any specific allegation of wrongdoing and instead said the inquiry was necessary “to assist the department in meeting its policy objectives.”

The investigation targets the university’s participation in the Exchange Visitor Program, which is designed to promote cultural and educational programs with visas for a variety of applicants, including students and professors as well as researchers, interns and au pairs.

Mr. Rubio gave Harvard a one-week deadline to produce a lengthy list of university records related to the student visa program. He said the department plans to interview university staff associated with the program and also may want to speak with visa holders.