Fair to who?

Fair to the father in the US, no, since Japan should have honored the US law and handed the criminal back to the US and returned the child to her father.

Fair to society, no, it allows her to not be punished for her kidnapping of the child

To the child, it is not fair or unfair, she has the life she is now given. She is a US citizen by birth and has that right.

There's a whole series of "is this fair" questions?

I have no idea what any of this is about - but I believe the threads should be combined.

Some are rants, others are questions (or half questions).

To OP - is it fair to which party? General question, several scenarios.

How does this fit into the other questions you've asked?