Excellent dissertation on Pittman-Robertson, Dingell-Johnson and Wallop-Breaux. Aside from the permits and fees and what comes in from Ducks Unlimited, Whitetails Unlimited et al, I would add what goes into hotels, restaurants, guides, business taxes, sales taxes etc. when we sportsmen and women go hither, thither and yon in our pursuit. In the USA wildlife is cultivated and managed by hunters, trappers and fishers. Where these pursuits are excessively regulated or outlawed the citizens of those areas are taxed to pay for the same results. The animals still get hunted and trapped but it's done by contract.