The Federal Aid in Wildlife Restoration Act of 1937, most often referred to as the Pittman–Robertson Act for its sponsors, Nevada Senator Key Pittman and Virginia Congressman Absalom Willis Robertson, was signed by Franklin D. Roosevelt on September 2, 1937 and became effective on July 1 of the following year. It has been amended many times with several of the major ones taking place during the 1970s and the most recent taking place in 2000.
Prior to the creation of the Pittman–Robertson Act, many species of wildlife were driven to or near extinction by commercial/market hunting pressure and/or habitat degradation from humans. The Act created an excise tax that provides funds to each state to manage such animals and their habitats. Notable species that have come back from the brink since the implementation of this act include white-tailed deer, wild turkey, and wood ducks.
The Pittman–Robertson Act took over a pre-existing 11% excise tax on firearms and ammunition. Instead of going into the U.S. Treasury as it had done in the past, the money is kept separate and is given to the Secretary of the Interior to distribute to the States. The Secretary determines how much to give to each state based on a formula that takes into account both the area of the state and its number of licensed hunters.
States must fulfill certain requirements to use the money apportioned to them. None of the money from their hunting license sales may be used by anyone other than the states's fish and game department. Plans for what to do with the money must be submitted to and approved by the Secretary of the Interior. Acceptable options include research, surveys, management of wildlife and/or habitat, and acquisition or lease of land. Once a plan has been approved, the state must pay the full cost and is later reimbursed for up to 75% of that cost through P–R funds. The 25% of the cost that the state must pay generally comes from its hunting license sales. If, for whatever reason, any of the federal money does not get spent, after two years that money is then reallocated to the Migratory Bird Conservation Act.