我今天收到USCIS发给我岳父岳母的信件，里面写着 “A review of official records shows that you departed the United States on September 28, 2020. Because you have departed the United States, you will be unable to satisfy the biometric requirement of the Form I-539. Regulations require all applicants on a Form I-539 attend a biometric appointment at their nearest ASC. USCIS is denying your application as a matter of discretion. Should you seek to re-enter the United States as a B nonimmigrant, you will be required to establish your admissibility again and be granted admission as a B-2 nonimmigrant by U.S. Customs and Border Protection.” 最后一句话是什么意思呢？签证没有取消，下次能不能入境还是看海关？是这个意思吗？
How Can I Use a Visa to Enter the United States?
Having a U.S. visa allows you to travel to a port of entry, airport or land border crossing, and request permission of the Department of Homeland Security (DHS), Customs and Border Protection (CBP) inspector to enter the United States. While having a visa does not guarantee entry to the United States, it does indicate a consular officer at a U.S. Embassy or Consulate abroad has determined you are eligible to seek entry for that specific purpose. DHS/CBP inspectors, guardians of the nation's borders, are responsible for admission of travelers to the United States, for a specified status and period of time. DHS also has responsibility for immigration matters while you are present in the United States.
比如说，你持 B2 签证乘飞机来到美国海关，申请入境，边检官员检查了你的签证，在系统里看看有没有可疑之处，盘问你来美国的目的、以及其他细节，若一切都看起来没问题，决定允许你入境，于是在你的签证盖章、给你6个月的停留期，此时你的 B2 身份才生效，这就是你的 B2 nonimmigrant status。
换句话说：所有 B2 签证乘客入境都需要获得 USCBP 官员的允许、拿到 B2 status，方可入境（其他签证也是一样的）。移民局拒信里的这句话，“Should you seek to re-enter the United States as a B nonimmigrant, you will be required to establish your admissibility again and be granted admission as a B-2 nonimmigrant by U.S. Customs and Border Protection”，说的就是这个意思。这是模板，适用于所有人；这句话可以忽略。