因为转换国籍后,原来的国籍不会被延期(不是中国籍),所以签证在一本不能被再用的护照上, -Show that visa of the old passport and the new passport to the CBP officer when enter US. The visa is valid though the passport does not. 如果不改变I-797的国籍,是不是意味着不能合法出