The Trump administration will direct US federal agencies to review their grants to Harvard University to potentially end or redistribute funding, as part of the White House's escalating battle with America's oldest university.

The administration is instructing federal agencies to "seek alternative vendors for future services where you had previously considered Harvard."

Some online posts claim Barron Trump chose to study finance at NYU’s Stern School of Business after allegedly being rejected by Harvard, Columbia, and Stanford.

MSNBC’s Lawrence O’Donnell is joined by Harvard Constitutional Law Professor Laurence Tribe who sounds off on Donald Trump’s attempts to block international students from the university.

Trump criticised Harvard for its foreign student population, suggesting the US shouldn't fund their education. He has moved to freeze grants and block international admissions, claiming the university isn't addressing antisemitism.

That sense of uncertainty hit many international students last Thursday, when the US Department of Homeland Security moved to ban them from attending Harvard. The plan — temporarily blocked by a court order a day later — marked a serious escalation in a months-long battle between President Donald Trump’s administration and the Ivy League college.

President Trump took part in a somber Memorial Day ceremony at Arlington National Cemetery, laying a wreath at the Tomb of the Unknown Soldier. In a speech, he honored fallen service members and criticized his predecessor,