The headline for this News-Leader post by Deirdre Shesgreen reads, "Blunt iffy on cause of global warming?"
Why the question mark? Roy Blunt is firmly on the record stating that human beings have nothing to do with climate change and global warming. From a Human Events interview during his Senate campaign:
Roy Blunt (R-Mo.) told HUMAN EVENTS Editor Jed Babbin that Republicans accept that the climate is changing, but added, “There isn’t any real science to say we are altering the climate path of the earth.” Asked if Republicans would offer a substitute for the Dems’ bill [to address carbon pollution and climate change], Blunt said no.
This positions is, of course, dumb. Blunt's positions has everything to do with protecting polluters and avoiding action to limit climate change -- it has nothing to do with science.