Secretary of State Marco Rubio launched an investigation into Harvard University's compliance with the government-run visa program for international students and professors on Wednesday—the latest flashpoint in the ongoing feud over campus control.

The U.S. State Department launched an investigation into Harvard University's eligibility to sponsor international students under a federal exchange program, the agency announced Wednesday, July 23. The probe focuses on whether Harvard remains in compliance with the requirements of the Exchange Visitor Program,

Secretary of State Marco Rubio said a probe will ensure the programme does ‘not run contrary to our nation’s interests’.