But will it cause him any problems if he wants to come to the US to work or go to school in the near term after his internship? From what I remember, don't J1 visas require you to return to your home country for a certain period of time? It was something we (in the US) worried about when thinking about having an intern from India who was planning to attend graduate school in the US in a year or so...
I think it takes time though to apply for the J1 visa. I remember the process to get mine being 6-7 weeks and I was interning for a UC university, meaning they have 'easy' access to it.