I would have thought the visitation would need to be supervised at the very least until a complete investigation has been done. Strange. Maybe an attorney can jump in and tell us why that did not happen. Given the rants and substance abuse issues I wouldn't want the child to be alone him. I honestly don't think he would hurt the child but still... a precautionary measure.
He was arrested for DIU in 2006. He got 3 years probation and had to attend AA meetings.
I suppose since his probation is over no one can check whether he is drinking again.