The ban goes into effect July 1. It is another one of those terribly worded laws passed by the ignorant and includes all "constricting snakes". The letter of the law now apparently bans cornsnakes and kingsnakes along with all boas and pythons regardless of size.
There is no grandfather clause, all current owners will be required to get rid of their animals or face misdemeanor charges and fines up to $500.
The ban also includes many other animals including rats and mice.
Here is the link to the Kentucky Post article on it
http://www.kypost.com/2003/06/25/exotic062503.html