McConnell: Climate change talkathon will be '30 hours of excuses'

Senate Minority Leader Mitch McConnellMitch McConnellIn House GOP, Ryan endorsement of Trump seen as inevitable McConnell: Trump White House will have ‘constraints’ Nearly 400 House bills stuck in Senate limbo MORE assailed Democrats Monday for planning to talk through the night on the chamber floor about climate change.

"There is a depression in Appalachia. An absolute depression. Families are losing work because of government attacks on the coal industry. Communities are hurting," McConnell (R-Ky.) said Monday on the Senate floor.

“And tonight, you’re going to hear 30 hours of excuses from a group of people who think that’s OK."

McConnell, who is facing a difficult reelection race, also blasted billionaire environmentalist Tom Steyer, who plans to funnel money into crucial races that could make or break Democrats in their fight to retain the Senate majority.

“It’s cruel to tell struggling coal families that they can’t have a job because some billionaire from San Francisco disagrees with their line of work," McConnell said.

Shortly before McConnell aired his grievances, fellow Republican Senator Jeff SessionsJeff SessionsSessions: Ryan 'needs to' endorse Trump soon GOP senator: 'I would consider’ being Trump’s VP Senate panel delays email privacy vote amid concerns MORE (Ala.) slammed Democrats on the climate-fest as well.

“Why wouldn’t the majority leader bring a bill to the Senate floor to approve President Obama’s climate agenda?” Sessions asked on the Senate floor Monday. “[Because] the American people do not support this and neither does most of Congress.”

Roughly 28 Senate Democrats are expected to participate in the all-nighter, which will run from Monday evening to 9 a.m. Tuesday.