More recently, Olson represents a group of billboard advertisers in a lawsuit against the City of San Francisco. The group is challenging a city law requiring soda companies to include in their advertisements warnings that consumption of sugar-sweetened beverages is associated with serious health risks like diabetes. The suit claims that the law is an unconstitutional restriction on commercial speech. In September 2017, a panel of the 9th Circuit Court of Appeals agreed with Olson and provisionally barred the city's mandated warnings.