When you arrive at the U.S. Port of Entry, a CBP officer at a primary inspection booth will ask you some questions to verify your documentation and may examine your luggage. Here are some possible questions:
What is the purpose of your visit to the United States?
How long do you plan to visit/stay?
Where will you be staying?
Do you have funds to support yourself in the United States?
Do you have the document or material to support/match the purpose and intent of your visit?
The CBP officer may send you to secondary inspection if you do not have the required documentation or if she/he cannot verify your information. A CBP officer at the secondary inspection will conduct a more detailed inspection to determine your admissibility. However, if she/he is unable to verify your legal admissibility, you may be allowed a temporary entry into the United States with a Form I-515A, "Notice to Student or Exchange Visitor,"
(https://www.ice.gov/doclib/news/library/forms/pdf/i515a.pdf). This document allows you to have temporary admission into the United States for 30 days. To maintain your nonimmigrant