✔ 最佳答案
To answer your question, the Department of Homeland Security has instructed the Transportation Security Administration (airport screeners) to check ALL foreign passports presented as ID for the presence of a visa and valid I-94. If the screener can't find a visa and valid I-94 they will hold the passenger for a CBP or ICE Officer to determine the passenger's status. Many, many illegal aliens have found this out the hard way and found themselves deported.