What a complete arse. The whole point of doing an exchange tour is to learn, give and integrate with your host nation. Be respectful of their traditions and regulations. Form long-lasting relationships that will help both countries work together. His "rights" have nothing to do with being an ambassador for his country and service.
If I were the DA in Washington I would certainly have him reporting to me for a very sharp lesson in his responsibilities and that his facial fashion statement does not need to attract the attention of national media.
Arse.