Sen. Dianne Feinstein, D-Calif. It was 142 years ago that John Muir, the famous naturalist and conservationist, first laid eyes on Lake Tahoe. Muir wrote in a letter to a friend that he “sauntered through the piney woods, pausing countless times to absorb the blue glimpses of the lake, all so heavenly...

Sen. Dianne Feinstein, D-Calif. During the Cold War, the United States and the Soviet Union were mired in an arms race. The antagonism led each side to stockpile more than 30,000 nuclear weapons to prevent the other from gaining an advantage. Today, however, nuclear weapons are seen as a financial burden...

The following commentary, originally published by POLITICO, is part of a series in which dozens of women will reveal what women they most admire. The series is part of “Women Rule,” a unique effort this fall by POLITICO, Google and The Tory Burch Foundation exploring how women are leading change...

Sen. Dianne Feinstein, D-Calif. Twenty years ago Saturday, the Brady Handgun Violence Prevention Act became the law of the land. This groundbreaking gun-safety law requires background checks on all gun sales by licensed dealers. Background checks on gun purchases work. The law has stopped more than 2...

Sen. Dianne Feinstein, D-Calif. As America’s environmental innovator, California demonstrates that conserving natural resources and developing clean energy sources can coexist. That is the reason California set the goal of generating 33 percent of its electricity by 2020 from renewable resources such...

Sen. Dianne Feinstein, D-Calif. Since it was exposed in June by leaker Edward Snowden, the National Security Agency’s call-records program has become controversial and many have questioned whether its benefits are worth the costs. My answer: The program — which collects phone numbers and the...

Sen. Dianne Feinstein, D-Calif. In July, as we heard the tragic details of two deadly passenger train crashes in Europe, we had the same thought: the lessons of the deadly 2008 Chatsworth train crash have yet to be learned. These accidents and many others could have been prevented if positive train...

Sen. Dianne Feinstein, D-Calif. The detention facility on our military base at Guantanamo Bay, Cuba, is holding 166 individuals. Most of them have been there a decade or more. Operating Guantanamo costs about $450 million a year — or about $2.7 million a detainee, according to the Defense Department....

Sen. Dianne Feinstein, D-Calif. The National Security Agency (NSA) program based on section 215 of the USA Patriot Act, which collects phone numbers and related data, is often called a “surveillance program” or a program to “listen to phone calls.” It is neither. Rather, this program collects...

Sen. Dianne Feinstein, D-Calif. As the United States prepares to wind down military operations in Afghanistan, we must not withdraw support for one of the most critical efforts to ensure security and stability in the region: the decade-long effort to curtail the Afghan drug trade. Very little product...