Open this photo in gallery: The Trump administration has launched a multifront attack on Harvard University, including freezing billions of dollars in grants.Faith Ninivaggi/Reuters 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, in a move that significantly expands President Donald Trump’s crackdown against the academic institution. In a cable dated May 30 and sent to all U.S. diplomatic and consular posts, U.S. Secretary of State Marco Rubio instructed the immediate start of...