Don't break up families; it doesn't matter if a member of the family entered illegally. If there are no crimes committed, and the family member who entered illegally is a good "citizen," let the family remain in America as one family. It is morally wrong to break up families when no member is engaged in criminal activities.
Why is this important?
Families shouldn't be broken up, and America needs to be a more welcoming nation, especially to those who do good.