UK/US Family on Verge of Being Split Apart?

Justice
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Thanks to a lovely combination of US and UK law, this family is about to be split apart. Their son will be forced to live with one parent or another, in either the US or the UK.
If anyone with knowledge of immigration laws or who has the ear of a politician has any ideas about what they can do to help them, please do so! Spouses shouldn't be torn apart, not their children taken away, just because the governments have the cash register open.