U.S. Citizenship and Immigration Services (CIS) (USCIS website) is the federal government agency that approves petitions for non-immgrant employment of foreign nationals and oversees lawful immigration to the United States.
Extensive information is available about every aspect of U.S. Immigration law and procedure.
Learn about current filing fees USCIS Filing fees
For matters already filed, use the Receipt Number to Check your case status
If you have questions, call the Customer Service Line at 1-800-375-5283 M-F [8am-8pm EST]
Be aware that the first tier of individuals who answer the telephones have no background or training in immigration matters. They are only trained to choose scripts based upon questions posed. If you call back and pose the question diffierently, you may get a different answer.
Make an appointment to see a Immigration Officer in person
is a free CIS service that lets anyone schedule an in-person appointment with a CIS Immigration Information Officer at a local local CIS office by using the Internet at any time of day or night. These CIS IIOs have access to the CIS database and can obtain results not obtainable over the telephone.