International students once saw US colleges as a gateway to a world-class education and career head start but shifting United States immigration policies, tightening visa conditions and high-profile ICE raids are causing them to reconsider. In the first in our series, Phoebe Zhang looks at how Chinese students are preparing for life – and safety – in America. The second instalment in our series is here. Beijing student Lulu Lu was just preparing for bed when she was startled by loud banging at...