First, I like the fact that you correctly noted that we have 2 houses of parliament. The senate and the national assembly. Thus the phrase 'Parliament and Senate' is wrong.
Now to the issue...we do have new MPs. The majority in the expanded national assembly. That could be a reason. Then the constitutional change that removed the executive from parliament. No question time to Ministers and their assistants. Powerful committees step in. Confusion over the role of chairmen vis a vis Secretaries etc.
Senate. We probably don't need it as currently constituted.This should probably meet on a need basis. These fellows are very idle mpaka they're now thinking of taxing harambees. My reading of the constitution is that they're wrong. Their work is DEVOLUTION Legislation not general law making.
Did we make a mistake of passing the katiba? We will need to amend it as we move on I'm sure.
Then the issue of tyranny. Fellows just being told by Duale 'ni hivi' and they follow. The other side isn't much different.