[sedachv]

> What do you think we should hugely cut spending on in order to fund this huge increase? Proposals to spend lots of money on this or that are somewhat unconvincing unless you can explain where the money should come from.

That is actually the easy part. Latest numbers I have seen are from 2009, when the US government paid farmers $5 billion to waste their time growing corn to turn into ethanol (basically to turn 1 barrel of oil into 0.7 barrels of oil equivalent), and paid oil and gas companies $7 billion in oil and gas exploration subsidies. Enough money for huge increases in both renewable energy and fusion research programs:

http://www.eli.org/sites/default/files/eli-pubs/d19_07.pdf