More details to this question:
MY PASSPORT IS STAMPED WITH B2 AOS NO EOS NO COS WHAT IS ALL OF THIS MEAN
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AOS means adjustment of status from nonimmigrant to immigrant.
EOS means extension of status for a nonimmigrant
COS means change of status from one nonimmigrant category to another.
Answered on Mar 14th, 2013 at 11:51 PM