As a student in the
Bay Area, Warren developed an interest in politics. He joined the San Francisco
Young Democrats, serving as its chairman at one time, and helped to organize the
California Democratic Council. After law school, Warren was admitted to the bar and joined a San Francisco law firm that represented labor unions. After some time there, he moved to Los Angeles, where he went to work for a larger law firm. In Los Angeles, he decided to focus his attention on his legal work and stayed out of politics for several years. He became engaged in electoral politics in 1961 after
Democratic political operative
Dick Tuck, who knew Warren from his political activity in San Francisco, encouraged him to become a candidate for a
Republican-held California State Assembly seat in a Los Angeles County district. The state system, which cost some $137 million and took more than a decade to implement, was scheduled to be completed in 1985. Reminiscing during
oral history interviews in the 1980s, Warren commented on his unexpected status as a successful environmental leader: Among a small circle, I became a minor celebrity and received credit which I did not deserve for things which I did not fully understand. I was considered an environmentalist, but I'm not sure I was deserving. Certainly I had environmental concerns, but I'd given such concerns only limited thought and attention. The regulations, which were designed to resolve problems that had been identified in the early years of implementing the requirements of NEPA, were well received. They remain in force as of 2012, having had only one amendment to one subsection over the years since their adoption. Warren left CEQ in 1979 to return to California for "personal and family reasons". He joined the faculty of the
University of California, Davis. In January 1986 he was an unsuccessful candidate for the Commission's chairmanship, losing to fellow Democrat Michael Wornum by a vote of 8–4. In 1993, while working as executive director of the Lands Commission, Warren encouraged
Mobil to pursue a proposal to use land-based
horizontal drilling to access
offshore oil near
Santa Barbara. The proposal, known as the "Clearview project", was opposed by environmentalists. It required approval from the
University of California, Santa Barbara, which owned the drilling site. In 1995, the university refused to grant permission for drilling, citing incompatibility with nearby land uses. Mobil abandoned the project the following year. ==Personal life==