WEll you're very likely right Doug - after all "the millions of people who are going to be drowned, and starved and flooded out of their homes, and forced to live in unwelcome exile" won't be citizens of the USA (apart from some from Florida and a few other places. And most of them are poor and powerless to start with.
THe only viable way forward is to use less energy, and to get that energy from renewables, like biomass and from solar and water and wind power. And that requires the political will, from people wanting it to happen and giving the politicians reasons to want it to happen, and changes which will mean it'll be more profitable to do it that way.
The trouble with increased petrol prices is that, up to teh point at which people stop using the stuff, it makes it all more profitable for the people in the oil business. And for government getting tax revenue.