i-485 interview in Washington DC

waiter13

Registered Users (C)
My case was transfered to somewhere in Washington DC for an interview. It is not the DC regional office, but looks more like its headquarter. I saw such a post last year, but no follow-ups. I talked to my USCIS regional office. They said it was not a mistake, but refused to tell me why. Does anyone know what types of cases may be transfered to Washington DC for an interview. Thanks a million!
 
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