“Visa difficulties provide cause for concern”

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students from china pose for photos after graduating from a business studies course at the university of sydney in october . [photo by william west/for china daily]

国际经济体系联盟和国际经济体系联盟

of the 54，664 doctoraterecipientsin，more than 16，000 werenon-us citizens，representing nearly 30个人版。

thisisaccordingtothedoctoraterecipientsfromusuniversitiesreportpublishedbythenationalsciencefoundationindecember.in physics，英国航空公司安全理事会

steven chu，AnobelPrizewinnerforphysicsandformerussecretaryofenergy， saidatarecentforumonus-chinarelationsatstanfordunverses " theconcernisthatit ' sharderandhardertogetvisas，Evenforthoseveryses

hesaidthevalidityofvisasforsuchstudentshasbeenreducedtooneyear，fromthreeorfouryears." iwouldneverhireapostdoroneyear，" ssaidthreoneyear，" professorofphysicsandprofessorofmolecularandcellularphysiologyatstanforduniversity。

最后一年、 theadministrationofuspresidentdonaldtrumpwasreportedlyconsideringaproposaltobarallchinesestudentsdueto " espionage " concerss h toto "连接器 ved，thegovernmenthasmovedtoplacesomerestrictionsonsuchstudents。。

theseincludereducingthevalidityofvisasforstudentsandscholarsfromchinastudyingandconductingresearchincertain“敏感”文件

gordon chang，AstanfordProfessorofamericanhistoryandirectorofthecenterforeastasianstudiesattheuniversity，said:" Atstanforstheuniversity，said:"atstanforfor we don ' tdoclassifiedresearch.overall，id on ' tseeanyirregularityorillegalitygoingon.'

hesaidthescrutinyofchinesestudentsworriedhimwhenhethoughtaboutacademicfreedom，经济性和完整性。