 She voted to fast-track approval for the Keystone XL pipeline project.In October 2015, Ayotte became the first congressional Republican to endorse a measure by President Barack Obama dubbed the Clean Power Plan, a measure that would see a 32 percent cut in the power sector's carbon emissions.That same year she was one of five Republican senators to vote to pass a non-binding amendment stating that "climate change is real and human activity significantly contributes to climate change."