well here are one or two facts that show how ludicrous your argument is mted. approx 2000 kids are killed by firearms each year in the USA~
approx 5000 kids are murdered by parents or siblings in the Usa each year' but less than 50 are killed by strangers each year in the USA.
according to these facts it is far safer for a child away from home so why dont we have an online database of parents? they are far more dangerous to children, and hey while we are at it why not have a online register of gun owners as they kill 40 times more kids than sex abusers, out of a population of 300 million. any child death is bad but a country with so much gun death should ban the bloody things, instead of facing the real problems its easier to find scapegoats