"Immigration experts we spoke to said Obama-era policies did lead to some family separations, but only relatively rarely, and nowhere near the rate of the Trump administration."
http://www.politifact.com/punditfact/statements/2018/jun/19/matt-schlapp/no-donald-trumps-separation-immigrant-families-was/
Stating only unaccompanied minors were detained under Obama is being dishonest. Families were separated.