During his tenure as CDF chair, he initiated many projects to improve the education and health sector.
[citation needed] His track record and social skills propelled him to the National Assembly where he is currently serving his second term.
Mbui belongs to the Wiper Democratic Movement and is currently the party's national organizing secretary.
On Jamhuri Day 2022 he was awarded the Chief of Burning Spear by President William Ruto.
Mbui is a grandson to the late Army chief, General Jackson Mulinge.