What is the actual H!b visa number stamped on my passport??

The visa number is generally understood to be the red number, some 8 or so digits, around the middle to bottom of the visa. It is not the control number. Since there is often widespread confusion and misunderstanding around this issue, I would recommend responding not only with the information, but with a good color photocopy of the visa itself. I offer no view or opinion on the process you are going through. For that, you should consult with an experienced immigration attorney. Scott D. Pollock Scott D. Pollock & Associates, P.C. 105 W. Madison, Suite 2200 Chicago, IL 60602 (312) 444-1940 fax: (312) 444-1950 e-mail: [email protected] internet: www.lawfirm1.com Please visit our renovated website at www.lawfirm1.com, which allows client access to case status, enhanced information on services, and other convenient features.

In what context did immigration send you this letter? When you say "immigration" do you mean USCIS? Is this a "Request for Evidence" on a pending application with a service center, or an application for a passport stamp with a U.S. embassy or consulate? "Visa Number" normally refers to the control number on the stamp laminated into the passport, visible on the upper right side. A Receipt Number or Case Number is a number USCIS assigns to a particular filing and will begin WAC, VSC, TSC, MSC or LIN and be followed by ten digits. An "A Number" is a file number specific to a person and is normally the letter "A" followed by eight or nine digits. It's hard to say here without knowing who is asking and in what context, but I think they might mean the Control Number.