Wyden and Merkley argued that extending the area would protect wildlife and benefit fishing and recreation industries.
Authorities say a crash on Interstate 84 near Portland, Oregon, in whiteout conditions caused a more than 100-vehicle pileup.
A former switching station for travelers along the old Oregon-to-California Trail, the property is a peaceful retreat.
Hatch, a city of Portland engineer ... concluded that sea otter reintroduction would work in Oregon and Northern California from a biological, socioeconomic and legal aspect.
"Multnomah Falls is about 25 miles east of Portland.This comes as heavy snow, soaking rain and gusty winds are expected to cause several impacts across the Northern California region on Thursday.