Mahaprasad Nanda

The term "alien" in US immigration law can feel outdated and even dehumanizing. However, it's still a legal term used to refer to any non-citizen. One of the key identifiers for non-citizens in the US immigration system is the Alien Registration Number, also known as the A-Number or USCIS Number. This unique number plays a crucial role in tracking immigration applications and managing records. This article will break down what the Alien Registration Number is, how it's used, and how you can find yours.

What is an Alien Registration Number?

An Alien Registration Number is a unique 7 to 9-digit number assigned by US Citizenship and Immigration Services (USCIS) to foreign nationals for identification purposes 1. It's used to identify all immigrants, including those applying for a Green Card through family ties, employment, or as refugees or asylees 2. Certain student immigrants, such as those with F-1 visas, are also assigned an A-Number 3. This number is a critical piece of information for anyone seeking to live permanently in the United States. It functions similarly to a Social Security number for US citizens, serving as a unique identifier within the immigration system 4.

Different Types of Alien Registration Numbers

While most A-Numbers consist of nine digits, there are instances where they may have fewer 5. If your A-Number is shorter than nine digits, simply add a zero after the "A" and before the first digit to ensure it is a complete nine-digit number 6. For example, the number “11223344” would become A011223344.

Why is the A-Number Important?

The A-Number serves several critical functions within the US immigration system:

• Identification: It acts as your unique identifier within the immigration system, much like a Social Security number for citizens 5. This helps USCIS differentiate you from other applicants and accurately link your records.
• Tracking: USCIS uses your A-Number to track your immigration files, which contain all your applications and related documents 3. This allows them to efficiently manage your case and ensure all your information is readily accessible.
• Application process: USCIS requires you to provide your A-Number on most immigration documents that you submit to them 3. This helps them link your applications and maintain a complete record of your immigration history.
• Monitoring and Law Enforcement: In addition to the above, the A-Number can be used for tracking purposes, including monitoring for illegal activity and obtaining criminal records 1. This highlights the importance of maintaining a clean record and adhering to immigration laws.

It's important to remember that your A-Number is yours for life and will be used on all immigration forms you file throughout your time in the United States 4. This underscores the importance of keeping track of your A-Number and ensuring its accuracy on all documents.

How to Obtain an Alien Registration Number

You don't apply for an A-Number directly. It's assigned to you when you apply for certain immigration benefits or statuses 2. The most common way to obtain an A-Number is by applying for a Green Card 5. However, F-1 student visa holders may also receive one when they apply for Optional Practical Training (OPT) 1.

If you're applying for a Green Card from within the United States, you'll typically receive your A-Number on the receipt notice (Form I-797) after filing your application (Form I-485) 5. If you're applying from outside the United States, you'll receive it during your consular interview at the US embassy or consulate 5.

Where to Find Your A-Number

Your A-Number can be found on various immigration documents. Here's a table summarizing where to locate it:

| Document | Location of A-Number |