From Wrestling Observer:
Vince McMahon has given his approval for an incest storyline. As we reported last week the angle would involve Ohio Valley Wrestling wrestlers Katie Lea and Paul Burchill. The angle would likely take place on either ECW or Raw, because there is some concern that it would get the wrong kind of heat if it were to take place on SmackDown! – which is on network television.
McMahon has wanted to do an incest angle for years. He once suggested that he be the father of his daughter Stephanie’s baby. As revealed on the McMahon DVD, Stephanie turned down the angle. According to her, Vince was to reveal himself as the father of her baby; when she said no, he pushed for Shane to be the father, but she turned that idea down as well.