The Trump administration has escalated its feud with Harvard, threatening to ban foreign student enrollment unless the university complies with demands to overhaul campus policies, including ending DEI (Diversity, Equity and Inclusion) programs. After freezing $2.2 billion in federal grants earlier, President Donald Trump has now called Harvard a "joke". Harvard has refused to give in to the demands, risking $9 billion in funding and the tax-exempt status. Is education freedom under threat in the US?