Photo: Sen. Corey Gardner Keystone XL

From left, Senate Energy and Natural Resources Committee members Sen. Cory Gardner, R-Colo., Sen. Rob Portman, R-Ohio, and Sen. John Hoeven, R-N.D., listen to statements from members of the committee during the markup of the long-stalled Keystone XL pipeline, Jan. 8, 2015, on Capitol Hill in Washington.