Sarah: Fighting the Man

A friend from high school that I chat on instant messenger with informed me last night that she is engaged to a Cuban guy so that he can get U.S. citizenship. Apparently, for this to work, you don't actually have to marry the guy, just be engaged and sign something. I'm very hazy about all of this. Anyway, a mutual friend is paying her $2000 and flew her and her mother down to Cuba for a trip just to be engaged to this guy! I appreciate her desire to help people that are stuck in bad living conditions. I also cautioned her, though, when I thought of that movie, Green Card, and how they had to pretend to be married because it was illegal. Is it worth this effort by my friend to save one person from life in Cuba?