There is a rumor going around here lately. Somebody just told me that whether you plan to work in NY or some states don't need CGFNS certificate ,you still "must" have the CGFNS certificate when you applying for green card. The people who told me about this had called CGFNS two months ago. She said that this is a new rule for applying for green card. I wonder if everyone have further information about this.
Ps. I don't know if applying for visa screen certificate and green card are the same thing, but I looked into the instruction of visa screen which didn't see any information about this. So I'm confused right now.