When Denis Sassou Nguesso returned to power at the conclusion of the June–October 1997 civil war, he appointed Passi, a northerner, as Minister of Fish and Fishery Resources on 2 November 1997.
[7] Later, Passi was also assigned responsibility for relations with India, presenting his credentials to Indian President A. P. J. Abdul Kalam on 20 January 2003.
He noted that Congo-Brazzaville in particular had a long and warm relationship with China and that trade and economic cooperation between the two countries was strong.
[9] In the June 2007 parliamentary election, Passi stood as the candidate of the Congolese Labor Party (PCT) in the Mayéyé constituency of Lékoumou Department.
Simon Mfoutou, who had been defeated by Passi in the 2007 election, won the seat for Mayéyé as the candidate of the opposition Pan-African Union for Social Democracy (UPADS).