I went to the local USCIS office, I walked in said I had an emergency for AP the security personal don't know much about it their jobis to simply scan you. You got in an office wait until they are available. Now is some cases you bring evidence your package done and thats it. BUT for me they made me send the application to an USCIS office which took a week because they wanted a case number. Once I got those numbers, they right there and then approved of my AP and I left the next day. Now, when I was in Argentina I checked my email to find a email saying my package was DENIED. At the USA customs they saw my AP noticed they were strangely different but still processed it just fine