President Trump warned Harvard University that it could and should lose its tax-exempt status.

“Perhaps Harvard should lose its tax exempt status and be taxed as a political entity if it keeps pushing political, ideological and terrorist inspired/supporting ‘sickness,’” he wrote on social media. “Remember, tax exempt status is totally contingent on acting in the public interest.”

Harvard announced yesterday they would defy President Trump’s order to crack down on anti-Semitic protests on campus. In doing so – the world’s wealthiest university risks losing all of its federal tax money. According to the New York Post, Harvard stands to lose as much as $9 billion. So far, the Trump administration has frozen $2 billion in funding.