[1][3] Unlike most southerners, he continued to support President Sassou Nguesso when multiparty politics was introduced in the early 1990s.

[5] The civil war resulted in Sassou Nguesso's return to power in October 1997, and Mvouba was appointed as Director of the Cabinet of the Head of State[6][7] (with the rank of Minister[7][8]) at the end of the same month.

[7] He held that post until being appointed as Minister of Transport, Civil Aviation, and the Merchant Marine on 12 January 1999.

[9] It was announced on 14 February 2002 that Mvouba had been appointed as Sassou Nguesso's campaign director for the March 2002 presidential election.

[18] At the time of the June 2008 local elections, Mvouba was President of the National Coordination of the Rally of the Presidential Majority (RMP), the coalition supporting Sassou-Nguesso.

[25] Following the July–August 2012 parliamentary election, Mvouba was moved to the post of Minister of State for Industrial Development and the Promotion of the Private Sector on 25 September 2012.

[27] After Sassou Nguesso's victory in the March 2016 presidential election, Mvouba was dismissed from the government on 30 April 2016.