A study due to be published soon concludes that there is a link between climate change and both the ongoing drought in California and this winter’s polar vortex.
The American Petroleum Institute’s campaign comes as the Obama administration considers new standards for rail cars that transport crude oil and whether to approve the Keystone XL pipeline for construction.
A White House spokesman said anyone who knows Obama's thinking on the pipeline isn't talking.
Republicans have made a quick retreat from the Nevada rancher.
Rasmussen found 61 percent of likely voters at least "somewhat favor" the project.
Sen. Mitch McConnell had criticized her for not taking a position on the project.
Billionaire climate activist Tom Steyer landed his first large check for the $100 million he pledged his climate action fund would funnel into 2014 races.
Sens. Rand Paul and Dean Heller criticized the rancher's comments about slavery.
Paul blasted the "alarmist" claims that extreme weather events are caused by climate change.
Murray Energy Corp. blasted the new coal-dust rule as “deeply flawed” and technologically unachievable.