The Trump administration has ordered US embassies worldwide to immediately stop scheduling visa interviews for foreign students as it prepares to implement comprehensive social media screening for all international applicants. A Tuesday state department cable instructs consular sections to pause adding “any additional student or exchange visitor (F, M, and J) visa appointment capacity until further guidance is issued” within days. The directive, first reported by Politico and now confirmed by the Guardian, could severely delay visa processing and hurt universities – many of which Donald Trump accuses of having far-left ideologies – that rely heavily on foreign students for...