United States Citizenship and Immigration Services › NASA

The United States Citizenship and Immigration Services (USCIS) is a federal agency under the umbrella of the U.S. Department of Homeland Security that oversees lawful immigration to the United States. The USCIS... more +

The United States Citizenship and Immigration Services (USCIS) is a federal agency under the umbrella of the U.S. Department of Homeland Security that oversees lawful immigration to the United States. The USCIS performs a broad variety of administrative functions, including processing visa and naturalization petitions, as well as applications for asylum and refugee status.  less -