The U.S. State Department has opened an investigation into Harvard University's eligibility as a sponsor in the exchange visitor program, Secretary of State Marco Rubio said on Wednesday, as the Trump administration takes aim at the country's oldest and richest university.

Secretary of State Marco Rubio said in a social media post that the State Department “is opening an investigation into Harvard’s authority to sponsor exchange visas. Visa sponsorship is a

The US State Department is opening an investigation into Harvard University’s “continued eligibility as a sponsor for the Exchange Visitor Program,” Secretary of State Marco Rubio announced on Wednesday,