Hi: I am a Canadian Resident, I mailed a letter to the address on W. Magnolia in Bellingham and addressed the envelope exactly as stated on the site and it was returned stating “insufficient address”. I am looking for a form to request the return of withholding taxes on a casino win, would anyone know the form # or address I can use to send the request?

A) FOR THE US: The form you need to request a return of withholding taxes on a casino win is Form W-7, Application for IRS...