Lugar is among a dwindling number of GOP lawmakers who has spoken about the need to curb greenhouse gas emissions. Mourdock, in contrast, has slammed what he calls “junk science associated with global climate change alarmism.”
However, Lugar, while arguing for curbing emissions, has locked horns with climate advocates when it comes to policy prescriptions. Last year he joined other Republicans in voting for a failed proposal to strip EPA’s power to regulate greenhouse gases.
On climate legislation, Lugar was among the minority of Republicans that voted for failed cap-and-trade proposals in 2003 and 2005 sponsored by Sens. John McCainJohn McCainNunes endures another rough day GOP lawmakers defend Trump military rules of engagement Senate backs Montenegro's NATO membership MORE (R-Ariz.) and Joe Lieberman (I-Conn.).
But in 2008 he voted against cap-and-trade legislation sponsored by Lieberman and then-Sen. John Warner (R-Va.), and in 2010 floated a broad energy security bill that did not include an emissions cap, although he touted other provisions that would help curb emissions.
Lugar has seen his party move increasingly into the skeptic camp on climate change.
It has become increasingly common in recent years for Republicans to break with the view, held by the overwhelming majority of scientists, that the planet is warming and human actions are playing an important role.
Some other centrist Republicans have also criticized their party’s direction on climate.
Former Rep. Sherwood Boehlert (R-N.Y.) took his party to task in a 2010 Washington Post column. Former Rep. Bob Inglis (R-S.C.) — who lost to a more conservative challenger in a 2010 GOP primary — has also expressed concern.