When I heard it was US vs. Bihar; the poorest and most corrupt state in India. According to the indian who told me.
So, with a little twist:

Mr Biwott was was visiting a US Governator. Mr Biwott was very impressed by the house of this governator, his cars, tv sets etc etc. Mr Biwott was acctually drooling, cause Mr Biwott think life is a competition and that he will be able to take all his property with him, when he dies. Anyway. Mr Biwott asked how this fat american politician managed to afford all this luxury.
Well, it is simple, said the obese texas ranger; do you see the highway bridge over there Mr Biwott? Yes, yes, said the enchanted Mr Biwott. Out with it!
Well, I only have one thing to add, said the fatso: 10%! 10%!
Hmm, aha, did Mr Biwott mutter to himself.
...
The year after the even more fat american visited Mr Biwott in Kenya, and the american was amazed by the luxury!
Maaan, how on earth did you pull this through???
Well, Mr Governator, do you see the bridge over there?
- No, I don't see any bridge.
...
- Exactly!

Noboby laughing
We are not supposed to joke about Mr Biwott maybe.
Thought he was toothless by now.

Not that you are not supposed to poke fun at the Total Man, aka 'the Bull of Auckland'. When the NARC government came to power, it took some guys 2 years to do what had taken Biwott 20 years. I think it is becuase he is no longer a force in Kenyan politics, he is not the butt of all jokes like he used to.

The first time I heard this joke, it was about a Kenyan and a Nigerian. The Nigerian of course taking Biwotts position.

Aha, I see.
So who is the "Biwott" of today?

Well, we do have the "K-Street Brigade", and the Murungarus, the Michukis, the Kimunyas etc.