Prior to becoming president, he served as Michener's Vice President, and was the Mayor of St. Louis before and during the outbreak of the Red Flu. He oversaw the most effective quarantine in the country and is credited with saving 100,000 of the city's residents. As Vice President he was sent to South America on a diplomatic mission.
Events of The Last Ship Edit
In the episode "Paradise," Allison Shaw, with the cooperation of four of the regional leaders, strip President Oliver of his powers and reduce him to a puppet leader to further their agenda of independence for the individual regions. He is rescued from the St.Louis White House in the episode "Legacy" by Kara Green and Tex Nolan.
During the Season 3 finale "Don't Look Back," President Oliver regains full control and authority over the United States after teams from the Nathan James captured regional leaders Albert Wilson and Randall Croft, retook control of the St. Louis White House, and the murder of coup-leader Allison Shaw at the hands of CNO Chandler.