US President Barack Obama speaks on the Keystone XL pipeline, flanked by Secretary of State John Kerry (R), and Vice President Joe Biden, on November 6, 2015 in the Roosevelt Room of the White House in Washington, DC. President Obama on Friday blocked the construction of a controversial Keystone XL oil pipeline between Canada and the United States, ending years of bitter and politically charged debate. AFP PHOTO/MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
