You get applications from China, for example—I can name specific countries, because I'm no longer a public servant—in which a lot of the education documents are fraudulent. All you can do is track them down. One of my first postings was in Nigeria, and students had to prove they had financial resources to support themselves. The American embassy did some research. They found that 74% of bank statements that said they had enough money were fraudulent.
On December 3rd, 2013. See this statement in context.