 Boussoukou-Boumba was subsequently appointed as Ambassador to the United States on 12 October 1993 and presented his credentials on 9 December 1993, serving in that post until April 1996.In 1996, Boussoukou-Boumba became President of the UDD.After Sassou Nguesso returned to power in October 1997, he appointed Boussoukou-Boumba to the government as Minister of Small and Medium-Sized Enterprises and the Craft Industry on 2 November 1997; later, in the government named on 12 January 1999, Boussoukou-Boumba's portfolio was expanded and he was appointed as Minister of Trade, Supplies, Small and Medium Enterprises, and the Craft Industry.