How many letters TSC niw RFE RFEsuffer2005-09-07 03:22:48

I got RFE from TSC. I prepared 4 letters, all very supportive. One from a Natinal Acadmy Engineering member, one from a society committee chairman, one my boss, one university professor. I saw people prepared 6 letters, 9 letters, even 16 letters for RFE. Should I hunt more, or it is ok for 4 letters. Please share your experience.

回复：How many letters TSC niw RFE

回复：How many letters TSC niw RFE

which officer? 256?

Thanks