Jay Rockefeller is not the sharpest tack in the box. His money bought him a safe seat in the Senate so he could position himself for President, but to know him is to discount him. The Rockefeller strain has pretty much gone to seed. As more and more millionaires fill the Senate, it becomes more and more like a House of Lords, full of men with more money than talent.
Years of in-breeding will do that to a family.