You can’t reasonably justify the cost of the Green New Deal by claiming that WW II is analogous, for several reasons, not least of which is the fact that WW II cost the US about $5 trillion (adjusted for inflation to today) whereas the GND has virtually infinite cost (though, some suggest it could be as little as $90 trillion). The only way the nation was able to fund the war effort in WW II was by everyone going on severe rationing, sacrificing metal, sugar and fuel for the war effort, besides perpetual war bond sales.
WW II was a period of severe sacrifice implementing a known defense against a demonstrable foe. In contrast, not only is climate change mostly educated speculation of future changes, but nobody has even proposed effective solutions to it. All these initiatives, from the Paris “Accord” (really, a treaty signed illegally by Obama) to the GND, are just empty sound and fury, mere cover for the fact that none of it would do what it claims to do. That’s part of the reason that any proposal to mitigate negative climate change has essentially infinite cost; countermeasures cannot be effective, but the people who pass the taxes can constantly increase the expenditures made for it.
