I think often a broad tax on everything can act like a sledgehammer trying to solve a specific problem. As Evergreen alluded to, and as I did in my recommendations, we've seen often that a regulation limiting discharge at a sewage treatment plant, for example, will then allow people to develop the technology to meet that. That is a much more surgical answer to a problem. You could increase carbon taxes quite a lot and not have achieved anywhere close to what the EPA average mileage fleet rules accomplished.
On May 11th, 2017. See this statement in context.