Ronald Lee Wyden (born May 3, 1949) is an American politician serving as the senior United States senator from Oregon, a seat he has held since 1996. A member of the Democratic Party, he served in the United States House of Representatives from 1981 until 1996. He is the dean of Oregon's congressional delegation and serves as the ranking member of the Senate Finance Committee. Known for his libertarian-leaning stances within the Democratic Party, Wyden has been a prominent advocate for privacy rights, internet freedom, and limiting government surveillance, positioning him as a defender of civil liberties.