An oil company headed by conservative billionaires David and Charles Koch has contributed $1 million to the campaign to suspend the state's landmark climate change law.

Flint Hills Resources does not have any oil interests in California but is a big opponent of climate change legislation around the country. Last week, the Kansas-based refining and chemicals manufacturer threw its weight behind Proposition 23, the ballot initiative that seeks to suspend California's greenhouse gas reduction law until the economy improves.

"This is a significant game changer," said Craig Holman, a campaign finance expert at Public Citizen, a Washington, D.C.-based consumer advocacy group. "They want to stop the state that's well known for leading the way when it comes to climate change legislation."

Read the full story at sacbee.com.