其實是收到4 個Approved Notice，
主申請人（EB2）有2個 Approved Notice，COA:H1B 和 E26
次申請人有2個 Approved Notice，COA:H4 和 E27
這些有什麽區別？
-E26 and E27 are the green card categories, respectively, for professional holding an advance degreen or of exceptional ability (i.e., EB2), and spouse or kid of an alien classfied as E26 (i.e., EB2 spouse or kid), etc..
去申請新的SSN時需要用哪個COA?
-Have you received the physical green card yet? If no, just wait for the green card. After you receive the green card, bring it to the lcoal SSA Office to update your SSN card.
