Cruz has long sounded a skeptical note on climate change. He chairs the Senate subcommittee that oversees NASA and has said that the space agency needs to focus more on getting off Earth and less time studying what happens on the planet, specifically when it comes to matters of climate change.
The Texas Republican said at a Senate hearing earlier this month that temperatures on the Earth haven't changed in 18 years, sparring with a retired Navy rear admiral and meteorologist who said that the Earth's temperature had risen during that time.
"Those facts are, to use Al Gore’s phrase, an inconvenient truth," Cruz said in Knoxville. He accused the administration and other countries of using climate change as an excuse to increase regulations and make life more expensive.
"So they set them aside and continue to propose jacking up the cost of millions of Americans’ day to day living. Jacking up your car bill, jacking up your electric bill, jacking up the cost of people who are struggling," Cruz said.
Earlier this month negotiators in Paris approved a historic climate accord that aims at limiting carbon dioxide emissions. It is not, however, binding, and the United States can walk away from it.
"In the event of a Republican administration that wants to undo the Clean Power Plan and other domestic regulations and to void the Paris agreement," Michael Burger, executive director of the Sabin Center for Climate Change Law at Columbia University and a lecturer at the school, told The Washington Post's Philip Bump earlier this month. "the option would be available to simply withdraw from the agreement."
This post has been updated.