The US state department has announced new visa rules that require foreign students to unlock their social media profiles for review before receiving educational and exchange visas. The review aims to identify indications of hostility towards the US, its citizens, or its founding principles, as well as support for foreign terrorists or antisemitic harassment. Students who fail to comply may be suspected of hiding their online activity. The new guidance applies to applicants for F, M, and J visas, which cover academic and vocational education, as well as cultural exchanges.