The Pittman-Robertson Act was backed by hunters, fishermen and outdoorsmen and was passed in 1937. States use their P-R funds to restore, manage, and enhance wild birds and mammals and their habitat. P-R projects also include providing public access to wildlife resources, Hunter Education, and development and management of shooting ranges. As of 2018, over $12 billion has been collected since 1939 for wildlife conservation thanks to the Pittman-Robertson Act alone. The legislation has yielded significant results for wildlife conservation. I doubt that your information about future taxes is valid.