The letter urges Obama to impose emissions standards on the nation’s existing power plants, which is a top priority for climate change activists.
“Implementing standards for existing power plants would be a significant, commonsense step towards curbing carbon pollution, and is far less expensive than spending billions on infrastructure projects to mitigate the damage caused by climate change,” the letter states.
The Environmental Protection Agency, in a 2010 legal settlement, said it intends to address existing plants. But the Obama administration has declined to provide a time frame for action, frustrating environmentalists and liberal Democrats.
The senators also press Obama to issue delayed rules that set emissions standards for new power plants, a measure that will add to the already large hurdles facing any proposal to build new coal-fired plants.