This weeks Stickman's column.
The Immigration Department in Chiang Mai is aware that statutory declarations made by Americans at the US embassy in Bangkok and the consulate in Chiang Mai do NOT verify that the statement made by the citizen is true, rather that the person who claims to have made the statement really is the person who made the statement. "Some Americans (and all other nationalities) get a stat dec from their embassy which states that they have income from abroad that fulfils the required criteria to qualify for a retirement visa. However, there have been a number of cases where it has later transpired that the person doesn't have that level if income at all. This loophole has long been exploited by some retirees and Immigration in Chiang Mai is cracking down. Previously, Immigration accepted the document at face value. Now, however, Americans using this method are asked to show proof that they do actually have such income. A printout of the account will suffice. At present it is only Americans targeted, but one would reasonably expect that all nationalities will be looked at as the practice is certainly not limited to Americans. Of course there is another means of meeting the financial criteria for retirement - showing a local bank account with 800,000+ baht deposited."
http://www.stickmanbangkok.com/StickmanWeeklyColumn2013/Bangkok-escorts-interview.htm