In the USA, it simply isn't normal for any kind of criminal to bring family to jail. This is nothing special. It's the same thing that happens when you go to jail for stealing a car, raping, or getting in a bar fight. Even for a DUI, the USA will separate a mom from a baby. Family jail is not a thing in the USA, even for newborns.
In the USA, it is also normal to take children away from abusers. It is child abuse to walk a kid across a hot desert, through cartel territory, and over a river or fast-moving canal. Any of the adults should consider themselves lucky if the USA doesn't file charges for felony child abuse.