H.R. 3399 would authorize the annual appropriation of $12 million over the 2021-2025 period for the U.S. Fish and Wildlife Service to provide financial assistance to states to eradicate nutria, an invasive rodent species, and to restore wetlands damaged by nutria. In 2020, the agency allocated $4 million for that purpose.
Assuming appropriation of the authorized amounts, and based on historical spending patterns for similar activities, CBO estimates that implementing H.R. 3399 would cost $52 million over the 2020-2025 period. The costs of the bill, detailed in Table 1, fall within budget function 300 (natural resources and environment).