您好!我和儿子时绿卡,在美国居住。我先生暂时还没有申请绿卡,人在中国,持有B签证十年签。疫情以来,B签证不能直接入境美国,需要在第三国提留14天,但作为绿卡配偶又是可以直接入境的,请问,我先生在入境时需要准备哪些材料可以顺利过关?
-He had better bring your marriage certificate and the copy of your green card. Also, he needs to show that he will return to China after the short visit, e.g. prove his connecttion with China (employment, etc.)
非常感谢!