The Trump administration’s threat to end foreign enrollment at Harvard University places in danger a key funding source for US schools — and could prompt international students to seek degrees elsewhere.

The administration said Harvard must share detailed records about its foreign students, an escalation in Trump's fight against prominent American schools.

U.S. President Donald Trump threatened to strip Harvard of its tax-exempt status on Tuesday and said the university should apologize, a day after it rejected what it called unlawful demands to overhaul academic programs or lose federal grants.