Science Insider : “The U.S. Senate’s simmering debate over climate science has come to a full boil today, with lawmakers trading feisty remarks as they prepare to vote on at least two measures offered by Democrats that affirm that climate change is real—with one also noting that global warming is not ‘a hoax.”  

“In an effort to highlight their differences with some Republicans on climate policy, several Democrats have filed largely symbolic amendments to a bill that would approve the Keystone XL pipeline. They are designed to put senators on the record on whether climate change is real and human-caused. The backers are now pushing for votes on those measures as soon as today.”  

“The Democratic amendments vary in detail and whether they call for specific actions on climate policy. But they share one thing in common: that lawmakers should at least accept climate science, regardless of party affiliation.”