I saw this happen a few times where I used to work. The one instance that I remember was an older pensioner and a Filipina woman in her 30s. She met him in our city and eventually convinced him to move back to the Philippines with her. He used his pension to build her family a house for them all to live in. Once the house was finished, they locked him out of it and threatened to call the police if he didn't leave. This guy was in a wheelchair and didn't know how to read. What struck me was how nice he was - he wasn't at all bitter when he was describing what happened, and was extremely polite to everyone in the office.

I guess they look for people like that.