Do you understand the difference between the government forcing you to leave the country and it being a decision of the family to stay or leave, no matter how old the child.
Seriously, do you have a reading comprehension problem?
You're shooting your own argument in the foot. The "family" does NOT have a choice about staying or leaving when a deportation order is being enforced. The choice is about leaving or taking legal action to stay (such as through a 3rd party), which YOU already acknowledged:
"I have prepared, filed documents and represented dozens of natural born citizen children in guardianship/conservatorship proceedings in state court to allow them to stay in the U.S. with 3rd parties (usually family or friends) when their illegal alien parents are being deported."
Why would anyone have to prepare or file any documents if they have a simple choice to stay??