More than a dozen schools warn international students of visa threat, with some urging them to return to campus

US colleges and universities are issuing warnings to their international students to return to campus before Donald Trump assumes office as president in preparation for a repeat of potential travel bans seen during his first term.

More than a dozen US schools have issued advisories. Some students must be back soon anyway since their spring semester begins before the president-elect takes office, but others are warning that students who depend on an academic visa may be at risk and should return to campus before Trump’s inauguration on 20 January.