I will not comment on it. I think F.B.I will scrutinize the Visa papers of all the applicants,and verify the email address and they will match those id’s with all the portals in the world and if they find any Anti-American statement has been posted from the username of that id,they will put that person on `no fly’ list and deem him/her having terror links.. (In my wild imagination… but can’t it be real also? )