The Multiple-Use and Sustained Yield Act of 1960 regulates the “multiple Use” function of forest resources, which includes the “management of all the various renewable surface resources of the national forests that they are utilized in the combination that will best meet the needs of the American people.” The Act defines “sustained yield” to mean the “Achievement and maintenance in perpetuity of a high-level annual or regular periodic output of the carious renewable resources of the national forests without impairment of the productivity of the land.” This Act could be interpreted to grant the US Forest Service the regulatory authority to require no net loss of CO2 from the lands it manages.