回複：回複：回複：回複：NIW RFE lawyer charges $4500

Sounds like an easy RFE, assuming that you are a researcher, published your research articles and have some citations.

1. Get 2-3 supporting letters from independent experts. If you can, get more. It should be mentioned that they don't know you in person but very familiar with your research work, how your work has influenced their's and the impact of your work on the whole field. IMPACT, IMPACT!

2. Print out the first page of your articles and the citaions (first page and reference page,highlight your names).

3. Other evidence you may have (patents, media exposure, etc.).

3. Carefully organize and present your RFE, make it easy for the visa officer to find what he/she wants to see.