As the White House moves to revoke Harvard University’s certification to enroll foreign students — escalating a battle between the administration and the oldest and wealthiest college in the U.S. — President Donald Trump is falsely claiming that Harvard offers “remedial mathematics” on topics such as simple addition.

The vetting will go beyond student applicants and includes faculty, employees, contractors, guest speakers and tourists, according to the cable seen by NBC News.

The U.S. State Department ordered all its consular missions overseas to begin additional vetting of visa applicants looking to travel to Harvard University for any purpose, according to an internal cable seen by Reuters on Friday,

Trump has been targeting Harvard for months, saying that the school had fostered liberal ideals and antisemitism. Harvard has argued in its lawsuit that the administration has violated the First Amendment through its targeting of international students. O’Leary jabbed the administration over its behavior toward Harvard on Friday.

A letter ordering federal agencies to cancel all remaining contracts with Harvard is the latest escalation in an ongoing back-and-forth over the school's ideological future.

President Donald Trump is in a fierce battle against Harvard University. Was Barron Trump rejected from the school? Where does he go to college?

Days after his administration moved to stop Harvard University from enrolling foreign students, President Trump said at a news conference Wednesday that the Ivy League college should set a limit for how many international students it accepts.

Harvard University alumnus Jonathan Harounoff criticizes the Ivy League school for focusing on opposing President Donald Trump rather than tackling antisemitism on campus.

The Trump administration is seeking to end all contracts it has with Harvard University, a move that adds to the strain between the federal government and America's researchers.