Hmmm.... I think we'll first need to have a conversation about his time in the Kibaki administration. https://twitter.com/TheStarBreaking/status/1276464807957262339

We might start, for example, with his stand on Kibaki's tolerance of graft and impunity. Remember the refusal to fire Ongeri and Ruto over FPE and maize scams? Here was his take. Keep in mind that by then Kibaki had been in power for over 7 years.
https://www.standardmedia.co.ke/mobile/amp/article/2000003793/kibaki-under-fire

We might ask why he stuck with Kibaki when John Githongo was forced into exile for exposing corruption. Was he, as one researcher says, "socialized into the ethos of the [colonial] state"? Does he regret the decision?
https://www.researchgate.net/publication/233034750_Bent_on_self-destruction_The_Kibaki_regime_in_Kenya

Remember this?
https://books.google.co.ke/books?id=pPVhHvjnawkC&pg=PT12&lpg=PT12&dq=kibwana+100+million+40+anniversary&source=bl&ots=2DuICzfG1p&sig=ACfU3U28afq-YbHbQdGyBhH-bStW3p1vYA&hl=en&sa=X&ved=2ahUKEwjK17jUzaHqAhWSERQKHfZwCUwQ6AEwAHoECAYQAQ#v=onepage&q=kibwana%20100%20million%2040%20anniversary&f=false

We can also ask about his support for political coalitions with folks he apparently considered responsible for genocidal violence. Does he still hold this view about ODM and its leadership or has he changed his mind?
https://www.reuters.com/article/us-kenya-election/kenya-govt-denounces-genocide-as-toll-hits-300-idUSL277107920080102

Does he still think that Kibaki made a "gallant attempt" to forge NARC "into a national party capable of transforming Kenya within a short period"? What did he make of Kibaki's tearing up of the MoU and IPPG agreements? Does he regret any of it? https://allafrica.com/stories/200609271058.html

Remember the Artur Bros saga? Here was what Kibwana made of it at the time. Does he still believe @RailaOdinga and @skmusyoka were guilty of treason over the incident? https://wikileaks.org/plusd/cables/06NAIROBI1187_a.html

I also have queries on his ministerial performance. For example, in 2006, as Minister for Environment and Natural Resources, he had a silly scheme to control plastic bags in supermarkets by raising their price but passing it on "indirectly" to the user.
http://gathara.blogspot.com/2006/11/narc-otics-in-plastic-bag.html