1）父母要來美國，已經enrolled EVUS,才發現護照3月到期。在國內已經辦了新護照。美國簽證在舊護照上。兩本護照可以一起用嗎？
-Yes. Show both passport to the Chinese Customs Officer when departing China and to the US CBP Officer when entering US.
２）如何在EVUS上update 新護照的信息？ 上了ＥＶＵＳ的網。ｕｐｄａｔｅ的頁麵沒有讓更新護照的地方。是不是不用ｕｐｄａｔｅ新護照的信息啊？（美國簽證在舊護照上）
還是要重新enroll EVUS？
-I think so. Read this at: https://www.cbp.gov/travel/international-visitors/electronic-visa-update-system-evus/frequently-asked-questions
My passport has expired. Do I need to enroll in EVUS as soon as I get a new passport or can I do that before my next trip?
If you have a new passport, you will need to enroll in EVUS before your next trip to the United States. We recommend you enroll at least one week before you are scheduled to leave for the United States.
重新enroll 會和已經enrolled EVUS 有衝突嗎？
-I don't think so.
