Thanks for input

Thank you for the input, and I believe that I'm sticking with my intuition, here.  In the past 5 years, I've done some serious personal recovery and realignments of my personal beliefs and effort to remain objective.  The facts are the facts, and my youngest son is overwhelmed by the "possibility" that his sister-in-law "could be" a scammer.  He acknowledges that this woman is behaving very badly, and has behaved very badly in the past.

Emotionally, I'm very sad about this situation - it's sad on every level and the baby is, indeed, my grandchild.  I can only say this because my son and his wife do not spend a moment away from one another, and it's not the "healthy" kind of attachment.  She doesn't work or even drive, and my son is disabled and has always been seriously isolated.  It's very unhealthy, and I've read countless articles of how this will likely go down:  he's a mess and she's going to accuse him of abuse and/or threats of violence.  Because she's married to him, she'll be granted a green card as the baby is a born citizen, and she'll be eligible for every welfare program available, including legal aid.  My son, on the other hand, will be forced to pay alimony and child support and there's nothing that I can do to prevent it.  It is what it is.

Walking away from this situation is the only thing that I can do, practically speaking.  And, I've been practicing separating my feelings from facts, and this situation is rotten from the gate.

I won't tell my son what I believe, or even hint at my concerns.  It would only give him a cause to hold onto this sham of a marriage even tighter.  Big, "ugh," here but it is what it is. 

Thanks, again.