In the United States, an alien number is an identification number the U.S. Citizenship and Immigration Services (USCIS) assigns to foreign nationals. An alien number is also known as an alien registration number, A-numbe... More »

According to and the website of U.S. Immigration and Customs Enforcement, a researcher can search for deportation records by checking ICE’s Online Detainee Locator System tool. One can also hire an immi... More »

An alien registration number, also known as an "A-number," is a designation that some aliens receive from the USCIS Immigration Service. A person who applies for a status adjustment is more likely to receive an A-number. More »

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