I agree with those who find this disturbing: to deem being interracial such an adversity that it is better that such children not live--NOT a good attitude at all. What about other adversities? Disabilities? Being too smart? Being adopted by a single parent? Eeeek. I don't see how this is NOT racist.
And if there IS adversity, it is the responsibility of the parents to equip their children to handle it and to be there to support them. It is NOT the government's place, unless there is PROVEN, criminal abuse, to interfere with the right of people to succeed or fail as they will.