Coming from a guy who has extensive history working on a fugitive task force and has served a ton of warrants, it is fairly difficult to get a family member for harboring. That's what parents do and they are given a little breathing room in this regard. They (the parents) would generally have to go above and beyond to get papered for harboring. With that said, I have arrested a a few mothers for aiding & abetting a fugitive (they actively helped the fugitive evade capture) as well as false statements to fed LE (again, actively assisting in fugitive's evasion of capture).
You would be better served calling local LE when you see the kid going into the house or call when you see him leaving, supplying a license tag number.
We bring evil things to evil people, kicking in a door near you!
."In theory, there is no difference between theory and practice. But,
in practice, there is."
- Jan L.A. van de Snepscheut
"The difference between 'involvement' and 'commitment' is like
an eggs-and-ham breakfast: the chicken was 'involved' - the pig
was'committed'."
-unknown
Working on a PhD in CQB one doorway at a time.
When the wolf attacks, he will find not all who run with the flock are sheep!