Ну если уж to be exact, то внести в поле нужно не A-number, а receipt number:
The receipt number is a unique 13-character identifier that USCIS provides for each application or petition it receives. The agency uses it to identify and track its cases. The receipt number consists of three letters-for example, EAC, WAC, LIN, SRC, NBC, MSC or IOE-and 10 numbers. You can find it on notices of action USCIS has sent you. https://egov.uscis.gov/casestatus/landing.do
Receipt number, если он и был, Марго не поведала. А так да, это всего лишь application form, ничего не доказывающая
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on 2017-11-26 11:14 am (UTC)The receipt number is a unique 13-character identifier that USCIS provides for each application or petition it receives. The agency uses it to identify and track its cases.
The receipt number consists of three letters-for example, EAC, WAC, LIN, SRC, NBC, MSC or IOE-and 10 numbers. You can find it on notices of action USCIS has sent you. https://egov.uscis.gov/casestatus/landing.do
Receipt number, если он и был, Марго не поведала. А так да, это всего лишь application form, ничего не доказывающая