Russell Feingold in The Huffington Post

On Energy & Oil: 2003 "4P": use Clean Air Act to reduce coal plant pollutants

By comparison, Feingold accepts the science and has consistently voted and spoken out for action. Feingold has said, "Climate change is real and we need to address it." In 2003 Feingold sponsored so-called "4P" legislation, which would have used the Clean Air Act to reduce four pollutants at coal-fired power plants, including carbon. Feingold opposed efforts that would have undone the EPA's endangerment finding and stopped efforts to address carbon pollution, explaining that "would have stalled our march toward energy independence through more efficient vehicles, alternative fuels and renewable energy, all of which can spur new American jobs."

On Environment: Clean Water Restoration Act to protect streams and wetlands

As a Great Lakes senator, Feingold showed particular leadership of water issues. Year after year, Feingold sponsored the Clean Water Restoration Act, to preserve Clean Water Act protections for millions of miles and acres of streams and wetlands. It's the same issue that President Obama addressed with a new clean-water rule just this week, a rule that the Senate will likely try to kill soon. So far, [Feingold's opponent] Sen. Ron Johnson hasn't added his name as a cosponsor, but he's expressed concerns about the rule, and this may soon provide a stark policy contrast between the two Wisconsin politicians.