他们三月底递交绿卡申请，已体检，已印指纹。旅行签证四月初过期。 现在只有中国护照。 请问机场检验身份怎么办？ 谢谢！
-No one will check that for travel within US. Chinese passport is enough.
-No one will check that for travel within US. Chinese passport is enough.
