The US Secretary of state (Blinken) is very busy in the middle east and with ukraine. He doesn't have time to deal with African warlords. So, the CIA chief was there to check on the US soldiers in Kenya and their work in Somalia and other security issues, but I"m sure the protests came up and I"m sure Ruto told him that everything was fine, but Americans are not stupid and they know the truth and they know everything.
Ruto should not push kenya towards another 2007 that's it. They'll let him get away with a lot, but not that.