It might. Infopass is definitely a way to go. Hiring an immigration attorney to figure out the problem is another.
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There a variety reasons there could be delays. A failure to change the address can cause a delay. It also could be as simple as you are waiting for security clearances. You would be best advised to schedule an infopass appointment with the field office where the interview was conducted. You can make an appointment by going to USCIS's website. You can find out more specific information about your case. If you are not satisfied with the information received or there are continued delays, you should consider consulting an attorney.
Wendy R. Barlow, Esq, The Law Offices of Grinberg & Segal, P.L.L.C., 111 Broadway, Suite 1306, New York NY 10006, (866) 456-8654, firstname.lastname@example.org, www.myattorneyusa.com. The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter. No recipients of content from this answer, clients or otherwise, should act or refrain from acting on the basis of any content included in the answer without seeking the appropriate legal or other professional advice on the particular facts and circumstances at issue from a licensed attorney. Provision of information on this website does not create an attorney-client relationship between you and The Law Offices of Grinberg & Segal, P.L.L.C., nor is it intended to do so.
You may set up an infopass to see if you can get an update, call USCIS for an update, contact your congressman if you choose, or hire an attorney to look into the matter for you. Changing your address should not cause any delays unless if was an incorrect address. You may also look up your case from the link below to see if was approved. However, I just checked and the link is down at the moment. You can try later. If it was approved then you know it's an address issue.