Money that COULD BE used for real enviro protection...
Clean up all the toxic waste dumps that are out there. Restore the orphan holes that dot the Earth. Prevent rainforest destruction. Save the whales. Develop a asteroid protection system. Develop a viable alternative energy system.
That will do for now....
Putting money into the Superfund trust fund has been far more hampered by elected Republicans failing to fund it and failing to go after the industrial polluters themselves than it has been affected by any shortage of funds due to GHG efforts. Saving the environment, oddly enough, has never been a high priority among CONSERVATIVES. Go figger.
There are, to my knowledge, no rainforests of note under environmental threat in the US. I am sure there are areas in the Pacific Northwest, Hawaii, and Puerto Rico that are under threat from developers. But if you want to use federal funds to buy up the land and take it off the market, you're going to have complaints from locals that you're preventing economic growth and expanded employment opportunities. The truly threatened rainforest is found in equatorial regions such as the Amazon, the Congo, Indonesia. There, of course, we have little influence save some method to curtail US consumption. This is not something you could fix if only somehow we could stop funding the war on CO2.
Save the Whales. I'm with you 100%. Unfortunately, there's not much else the US can do than what it has already done. If you'd like to declare war on Japan, Iceland, Norway and the Inuit Nation, I'll give you a raised fist, but the whole problem has been boiled down to one of cultural reeducation. Money is not the issue.
Asteroid protection system. Uh-huh. We could move current funding up a order of magnitude without impacting the budget for mosquito control. There is no conflict between this and GHG emission reduction.
"Develop a viable alternative energy system". I'm not sure what you're suggesting here. The US already spends a considerable amount of money on this topic and unless you're leaving a few crucial points unspoken, I think this is part and parcel of our efforts to reduce GHG emissions. What do you actually mean with this point? Where would you spend money and how would it differ from efforts to develop clean coal, wind, solar, fission, fusion, hydroelectric, OTEC, geothermal, space-based or any of the dozens of other technologies in R&D?
Finally, I haven't the faintest idea what an "orphan hole" might be and neither does Dictionary.com, Wikipedia or three different search engines.