This doesn’t directly answer the OP question, but it looks like 23&me is offering to help reunite kids and parents! Very cool. Maybe something to keep an eye on in case it’s something people need to get representatives to push for.
https://www.google.com/amp/s/www.mercurynews.com/2018/06/21/congresswoman-jackie-speier-asks-23andme-to-reunite-families-separated-at-border/amp/