I'm currently applying for the Ph.D. programs in the United States. My academic instructor has been notified that he violated some immigration regulations (he is not U.S. resident) and he lost his affiliation. Now he's in transition and applying for his next position.
We had very good collaboration and I know that he will write a strong letter for me. However I'm now a bit concerned that whether his letter will have any negative impact to my application, since faculties from other universities don't know his situation. I got different opinions on this problem and some people suggest me to re-consider whether I can use his letter.
So how will the faculties from other universities treat this case? Personally he told me that he don't think this would be an issue for my application. But I just don't know how others would think about it.
If there are some potential issues, what should I do to decrease the negative impact?