Not that it has never been done. But my purely personal and therefore perhaps figmentational self-delusion is that it is seldom brought to justice compare with how often I nightmarishly fantasize it happens. I don't know how to evidence-test these suspicions, which may spring more from my own constructed universe than the universe of fact. But I cannot know.
Influence peddling has always been profitable.
@MBraedley No, not mine. But Hercules never cleaned out the Augean stables of K Street, nor Christ its moneylenders, and I do not know how now to ever excise the endemic rot.
Even this particular aspect is no more than one small vein of infectious pus among a labyrinthine network of undemocratic financial drivers underlying the entire political system. It's all about money. Period.