A Georgia couple who says they gave their son marijuana to treat his seizures, is fighting to regain custody of him. The state took custody of Matthew and Suzeanna Brill's15-year-old son, David, in April when he tested positive for marijuana. They are charged with reckless conduct and facing jail time. Increasingly marijuana is being decriminalized. Despite this trend, however, marijuana is still considered an illegal drug. Is it ever justfied to give a child an illegal drug to treat a debilitating illness?