I just don't think this is going to happen in reality.
The pro man made global warming crowd has bungled the message so bad that I believe an event or series of events will be necessary to convince Americans and the other 85% of the world's polluters to actually do something.
Honest question, what do you think it would take to flip the naysayers?
I forgot that we only discuss politically feasible things here. (I keed)
A carbon tax is just the most elegant way of regulating emissions and solving the dilemma that Medic brought up about who gets to fly and who doesn't. My prefered policies if I were president and I didn't want to waste all of my political capital is:
1. Tariff on foreign oil couched as protection of American oilfield workers being put out of work. As Trump has demonstrated people don't get upset about taxes if you call them tariffs.
2. Federal government level energy procurement is required to be 50% renewable (and scale this figure up every year)
3. All new federal government level vehicles must zero emission. All new federal building with solar on top. Sourced in the US
4. A bunch of Military initiatives around non-fossil fuel energy sources this will be couched in terms of readiness not the environment (this is to drive battery energy density and efficiency)
5. Infrastructure bill that will be couched as putting Americans to work that will focus on
A. Ocean shipping particularly harbor capacity and loading and unloading infrastructure at ports
B. Waterway shipping particularly dredging rivers and maximizing the amount of rivers navigable by large barges, also river port capacity
C. Freight railway, more tracks and many more hubs for loading and unloading
D. High speed passenger rail that mirrors the busiest air routes
E. Light rail in cities
6. Initiatives to increase the density of urban areas through the way programs like FHA are administered.
None of these require you to be a believer in Global Warming to support (although believers are a majority) We all benefit from cheaper cleaner energy and cheaper transportation.