Some hunters and anglers join quest to turn CO2 hysteria into cash

See the article here, entitled "Hunters, anglers join global-warming outcry".

From a related letter here:

As a result of the known and predicted impacts to fish and wildlife from climate change, we ask that you cosponsor climate change legislation including a 'cap and trade' system that will reduce carbon dioxide pollution by 2% annually, or 80% by 2050, and channel new revenue to natural resource agencies for fish and wildlife conservation activities.

Signers of the letter are listed here.

Can we trust that the good folks at "A.J.'s Bait and Tackle" have independently verified that human CO2 emissions really are the root cause of their climate concerns?