A pioneering collaboration of Republicans and Democrats on the environment.

NOW investigates the partnership of a Republican congressman and the Idaho Conservation League to protect a vast swath of the state's natural environment. Does their compromise legislation come at too high a price?

The legislation, the Central Idaho Economic Development and Recreation Act (CIEDRA), transfers some public land - land Americans across the country pay for - to private local ownership in exchange for protection of nearby wilderness. It also leaves land bordering the wilderness open to further recreational use, especially involving off-road vehicles.

That price is too high for some, including singer-songwriter Carole King, who owns a 128-acre ranch in Idaho. NOW talks to residents, ranchers, off-road vehicle fans and wilderness advocates to unearth the truth behind a tug-of-war that is playing out not just in Idaho, but in other states and the halls of the U.S. Congress.