Michael served as a Minister in the Australian Government in the roles of Justice Minister, Minister for Counter-Terrorism, Minister for Human Services and Minister for Digital Transformation. He spent fifteen years of the Member for Stirling in Western Australia.

An expert in international relations, public policy and regulatory affair, since leaving Parliament Mr. Keenan has served as a successful business manager and company director. He currently serves on the Boards of U Group and Co, Osteopore and the Australian Strategic Policy Institute. He is a Senior Adviser to global consulting firm Partners in Performance. Michael owns and runs Branksome Advisory which provides strategic advice to domestic and international companies.