Arthur Marshall, of Washington, D.C., is joined by his two sons (not in photo) as he shouts out in a chant during a short rally in front of The White House to protest the Keystone Pipeline, in a march which began at Freedom Plaza, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
Hannah Moore, of Arlington, Va., shouts out in a chant during a short rally in front of The White House to protest the Keystone Pipeline, in a march which began at Freedom Plaza, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
People cary a mock pipeline as they pass by The White House to protest the Keystone Pipeline, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
People carry signs and banners as they pass by The White House to protest the Keystone Pipeline, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
People carry signs against the backdrop of office buildings, during a march to protest the Keystone Pipeline, which began at Freedom Plaza, as it passes by The White House, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
People carry a mock pipeline as they pass by The White House to protest the Keystone Pipeline, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
People march from Freedom Plaza en route to The White House to protest the Keystone Pipeline, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
People march from Freedom Plaza en route to The White House to protest the Keystone Pipeline, in Washington, D.C., Sunday, Nov. 18, 2012. (Rod Lamkey Jr./The Washington Times)
** FILE ** The American flag flies at half-staff over the White House in Washington early on Saturday, Sept. 15, 2012, in honor of the four Americans who died when an angry mob stormed the U.S. Consulate in the eastern Libyan city of Benghazi on Sept. 11. (AP Photo/J. Scott Applewhite)
