Complex sentence: He currently serves as vice-chairman of the Montreal Executive Committee, responsible for infrastructure and economic development, and sits on Montreal City Council representing the Sault-Saint-Louis district of the borough of LaSalle.
Split into simpler sentences: He currently serves as Vice-Chairman of the Montreal Executive Committee, responsible for infrastructure and economic development. He also sits on Montreal City Council representing the Sault-Saint-Louis district of the borough of LaSalle.