I know its a long shot , But has anybody reported this to
http://www.ic3.gov/,
Sorry if it has but 20 pages on this is too much to read to find out,
They do actually chase some of these people even outside of the US
I know for a fact they are waiting for another well known American scammer to
try and renter the US from Thailand,
The more people that report a scammer to the FBI the more chance you have of them acting