Sorry for going off-topic. I simply do not think you are giving the beneficiaries enough credit. Whether male or female. I moved to the US when I was 18 and I was not a "child" or "helpless." In fact, it drives me crazy when beneficiaries are spoon-fed or molly-coddled at every step. Not that they should be thrown to the sharks, but they made the decision to move to the US and they too are equally responsible for the consequences of that action. Sure it's a risk for everyone involved but if I were the mother of two minor kids, I'd think deep and hard before I flew half way around the world to marry some guy who I've probably met once or twice in my life and most of said relationship exists only in a virtual world.
As for myself, sure, it'd be hard to go back if my marriage didn't work, there's always certain amount of shame and embarrassment involved, especially in countries like India and Columbia, too, I would imagine. It would be tough yes, but then, I'd rather be at home with friends and family instead of trying to work it out with some guy who is obviously not interested, living in a strange land. Life's too short to be unhappy.
Hopefully, the OP has found the answers he needed or will come back to clarify the situation.
As the Op is posting a status update and has not asked for feedback, I see the value in keeping this thread open outweighed by the potential for negative comments. This thread is now closed to further comment.