First of all, you are the parent. This man was not the child's parent. Secondly, you are engaging your children in the production of illegal drugs. Do you really think walking the dog and doing dishes is comparable to marijuana cultivation?
I made my kids do all sorts of unpaid labor - wash dishes, vacuum, walk the dog, etc. Should the government have prevented that?
First of all, you are the parent. This man was not the child's parent.
Make up your mind - did the mother make her child an unpaid laborer or did she not?
Secondly, you are engaging your children in the production of illegal drugs.
A plant, which is recreationally legal in 4 states and medicinally legal in 22.