Drugs and alcohol.  Both should be absolute disqualifying child interaction problems.  How can drug or alcohol addiction be in any way rationalized as problems that are OK to have when caring for a child?  Someone is IN rehab?  GOING to rehab?  HAS IT UNDER CONTROL?  HAPPENED TO AVOID arrest, another DUI, overdose, there is/was a justification for falling off the wagon?   Yes, there will always be a continuing problem when a father and mother are together, and enabling behavior is carried out by one of the other.  Yes it will be difficult to deal with those situations.  But, when it is being laid out before a court that a potential custodial or care parent has a drug or alcohol problem, when the person is either going into rehab by their own telling, in rehab, or in need of rehab, how is child interaction without direct and sure supervision in any way justified?  The standard is a simple one.  No child interaction if any indication of drug or alcohol abuse.   Period.