I had this disscussion with an Elder my thoughts were this.
"You and the other Elders have decided for the people in the area that it is OK if a child abuser comes to their door,He can start a study with them and come into their house"
"Imagine this a child abouser starts a study with a lady and children,Now her Husband dosen't study and is probley suspicious of religion anyway.
Then he finds out the guy comming into his house and around his children is a chill abouser...ill leave it to you as to how he would fell"
As usual the Elder just walked away and said nothing.
Karter.