Hillary Clinton pledged Monday to make America "the world's clean energy superpower," but said her former role as secretary of state prevents her from weighing in on the controversial Keystone XL pipeline.
Andrew Rafferty, NBC News: Politics
Mon, 07/27/2015 - 9:58am
Hillary Clinton pledged Monday to make America "the world's clean energy superpower," but said her former role as secretary of state prevents her from weighing in on the controversial Keystone XL pipeline.