Language
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
在前往美国之前,请登录运输安全管理局(Transportation Security Administration)和美国海关及边境保护局(U.S. Customs and Border Protection)进一步了解情况。