The United States Court of Appeals 5th Circuit in Castro v The United States affirmed there is nothing in the Constitution protecting a US citizen child being deported with their alien father.
If the alien father being deported wants to take the US citizen child he can.
This would not happen if both parents were US citizens.
Great find. Instead of acknowledging this very point, the apologists will now deflect by bringing up arguments they lost repeatedly in other threads.
Also, I don’t see anywhere in this decision where the child was claimed to be a natural-born citizen. But, as the OP showed, it doesn’t matter. The courts won’t treat them any different than outright foreigners. I guess you need big money in your back pocket, like Obama.