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Where did you apply for your immigrant visa or adjustment of status?

Provide the location of the U.S. Embassy, U.S. Consulate, or USCIS office where you applied for your immigrant visa or submitted your application for permanent resident status.

因为是10年前办的，所有的收据都丢了，不知道是哪个office办的，当时是我妈来美国探亲的时候办的。

你知道有什么办法可以查到吗？

-Do you still remember which city or state you were living when your mother applied for the green card? If yes, just go to this website to find the USCIS Field Office and put that office there:

Field Offices | USCIS