In seeking to reshape elite universities, the Trump administration is using several tactics, including freezing federal grants and contracts, and threatening colleges' tax-exempt status.
Admitted students around the world are anxiously tracking the school's feud with the Trump administration, which is seeking to keep it from enrolling international students.
A letter from the U.S. General Services Administration, which is dated Tuesday, tells agencies to submit a list of contracts they have terminated with the university by June 6.
This comes in response to a lawsuit Harvard filed on Friday morning, challenging the Trump administration's abrupt move to revoke the school's ability to enroll foreign students.
International students make up more than a quarter of Harvard University's student body. Harvard says the government's actions, which could cut off a major revenue stream, are "unlawful."
The university's president convened two panels to study campus antisemitism and anti-Muslim bias last year. Harvard said it will begin implementing at least some of the reports' recommendations.
The president's comments came after the administration froze $2 billion in federal grants for Harvard after the university rejected what it saw as illegal government demands.
The government announced it is freezing more than $2.2 billion, hours after the university refused to make changes it said would "dictate what private universities can teach."
Harvard President Claudine Gay resigned Tuesday amid plagiarism allegations. Experts say improved technology could bring to light more alleged transgressions in past works by other academic leaders.
Jacinda Ardern resigned as New Zealand's prime minister and left Parliament earlier this year, saying that she "no longer had enough in the tank" to continue in politics.