Texas Sen. Ted Cruz chaired a climate change hearing in the Senate Commerce Committee’s Subcommittee on Space, Science and Competitiveness. Titled “Data or Dogma? Promoting Open Inquiry over the Magnitude of Human Impact on Earth’s Climate,” the hearing featured five witnesses, four of whom question climate science.

“There has been no significant global warming in the past 18 years,” Cruz said in his opening statement. Cruz often points to satellite data to back up his claims.

“I be­lieve that pub­lic policy should fol­low the ac­tu­al sci­ence and the ac­tu­al data and evid­ence, and not polit­ic­al and par­tis­an claims that run con­trary to the sci­ence and data and ana­lys­is,” Cruz said.

Fellow Commerce Committee member and rival candidate Florida Sen. Marco Rubio skipped the hearing.