During his remarks on H.R. 3, a bill that would grant Congress the authority tocircumvent President Barack Obama and approve the Keystone XL pipeline, Barton acknowledged the existence of climate change, but argued that it is steered by natural causes.

"I would point out that people like me who support hydrocarbon development don't deny that climate is changing," Barton told his fellow members of a House Energy and Commerce subcommittee. "I think you can have an honest difference of opinion of what's causing that change without automatically being either all in that's all because of mankind or it's all just natural. I think there's a divergence of evidence."

"I would point out that if you're a believer in the Bible, one would have to say the Great Flood is an example of climate change and that certainly wasn't because mankind had overdeveloped hydrocarbon energy," Barton added.