A green card, or a permanent resident card, allows you to live and work in the United States. Learn the rights and responsibilities of green card holders.

What you need to know about writing a US travel visa invitation letter, including how to write it, tips to get approved, and a sample letter.

If you’re applying for a green card, visa, or citizenship, understanding the I-797 Notice of Action is important. Learn what it is, what it means, and why it matters.

To track your case, communicate with USCIS, or retrieve lost documents, understanding your USCIS online account number is important. Learn more now.

USCIS offers applicants a way to file for a temporary U.S. visa online. Learn how to fill out Form DS-160 and if you should be using it to plan your U.S. trip.

Understanding Form I-90 can help you avoid costly and time-consuming Green Card mistakes on your Application to Replace Permanent Resident Card.

Understanding Form I-551, aka your Green Card, is important if you’ve been granted permanent residency in the U.S. Get the details here.

Every green card has a unique number that is used to track your immigration records and status. Learn what green card numbers mean and where to find them.

This guide to Alien Registration Numbers explains what they are, how to read them, and when you need them. Learn more about A-numbers and USCIS.