I think there's an automatic assumption that you have to be more thorough. From some countries, there's very little fraud, and you don't have to double-check with the bank to find out if the bank statement was genuine or not. I think we can make certain assumptions, and you have to generalize. Some people don't like it. They say every country should be treated equally, but we do know there are much higher levels of fraud and misrepresentation coming from some places and even varying within countries.
On December 3rd, 2013. See this statement in context.