What is the legal document that allows me to be in the United States ?
When a person is admitted to the United States they are issued form I-94. This is the “permit” that allows that person to be in the U.S. and which also governs the terms and conditions of their stay. The I-94 is the single, most critical document there is. If the visa in the passport expires there is no problem, but if the I-94 expires there are very serious problems. Extensions and or changes of status must be filed with the CIS before the I-94 expires. If a timely extension and/or change of status is filed the person my remain legally in the U.S. while the change of status and or extension is pending even though the I-94 may then expire. How do I get a visa in my passport One of the most unfortunate situations that occurs, with some regularity, is a person plans a trip abroad but does not take into consideration that they cannot return until they get a new visa in their passport. They may need a new visa because the old one expired or because the one they have is not in the correct v