Reaching across throw-in boundry line

[APHP]

Several months back, I made a futile attempt to convince several board members that once the throw-in is released
by the A1, B1 may reach across the throw-in boundary line and hit/touch the ball. As I mentioned before, this queston has been on the South Carolina Basketball Officals Test for a number of year. For those who are still not convinced , suggest you read March Issue REFEREE, Page 16 & 17. There are (2) pages devoted just to this topic.