回複：that is easy to answer, see my

Thanks. I did emphasize a lot on the benefits of my research to the interests of US in my original application. So i was not requested evidence on this. I am thinking if I can say that some of the facilities I need to use are not available to people without green card. This is ture in my case. Is that OK. I was also asked to provide evidence to demonstrate national interest will be adversely affected if I was not granted a GC. I have emphasized this in my previous application. I am wondering if such statement is just routine that they send to each applicant. Thanks a lot to your answers.