[求助]请问F-1最早能比I-20上的日期提前多久进入美国？

F-1签证

请问最早能比I-20上的日期提前多久进入美国呢？

有人说45天，有人说30天？

有人能帮帮我吗？

这个很重要对我来说。

先谢谢大家了。

30天

Students are advised of the Department of Homeland Security regulation which requires that all initial or beginning students enter the U.S. 30 days or less in advance of the course of study start/report date as shown on the Form I-20. Please consider this date carefully when making travel plans to the U.S.

A beginning student who wants an earlier entry into the U.S. (more than 30 days prior to the course start date), must qualify for, and obtain a visitor visa. A prospective student notation will be shown on his/her visitor visa and the traveler will need to make the intent to study clear to the U.S. immigration inspector at port of entry. Before beginning any studies, he or she must obtain a change of classification, filing Form I-539, Application for Change of Nonimmigrant Status, and also submit the required Form I-20 to the Department of Homeland Security office where the application is made. Please be aware that there is an additional fee of $140 for this process, and that one may not begin studies until the change of classification is approved.

找到官方的条文了，谢谢版主~