> I tried for EB-1 Green Card twice and got rejected both times. You need 3 out of 10 criteria for Green Card. Over 2 petitions and an appeal - separate USCIS officials gave me 4 criteria. But none of them gave me 3, and their responses were very hostile.

I don't really understand. Do you mean to say that the USCIS officer wanted you to meet 4 criteria while the rules specify 3? Did you take them to court over it?

If you already were on O-1 visa, it should've been easy to qualify for EB-1 GC. The criteria is pretty similar for both. Did you try a different law firm? What criteria specifically did you not meet?