President Obama, flanked by Secretary of State John Kerry (right) and Vice President Joe Biden, announced the Keystone XL pipeline decision Friday in the Roosevelt Room of the White House. Mandel Ngan/AFP/Getty Images hide caption

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Miller Farm, the terminus of Van Syckel's pipeline, in 1868. The oil was pumped to Miller Farm and then transported by railroad. Drake Well Museum/Courtesy of PHMC hide caption

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House Energy and Commerce Committee Chairman Fred Upton, R-Mich., left, clasps hands with Sen. John Hoeven, R-N.D., sponsor of the Senate's Keystone XL pipeline bill version, on Wednesday as lawmakers gather to urge President Obama to sign the legislation approving expansion of the Keystone XL pipeline. The House passed the Senate's version of the bill Wednesday afternoon. J. Scott Applewhite/AP hide caption

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Senate Majority Leader Mitch McConnell, R-Ky., prepares to speak to the media Thursday before the Senate voted to approve the Keystone XL pipeline. Jim Lo Scalzo /EPA /Landov hide caption

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An excavator loads a truck with oil sands at the Suncor mine near the town of Fort McMurray in Alberta, Canada in 2009. Environmental groups that oppose oil sands mining have pointed to delayed and canceled projects as a sign of recent success. Mark Ralston/AFP/Getty Images hide caption

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Susan and Bill Dunavan own 80 acres of land in York County. Melissa Block/NPR hide caption

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Pipes for Transcanada Corp.'s planned Keystone XL oil pipeline are stacked at a depot in Gascoyne, N.D. The House of Representatives approved the Keystone XL pipeline Friday; the Senate voted against it on Tuesday. Andrew Cullen/Reuters/Landov hide caption

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GOP Rep. Bill Cassidy and Democratic Sen. Mary Landrieu face off in a Dec. 6 Senate runoff. Both are pushing for legislation approving the remaining leg of the Keystone XL pipeline between Alberta, Canada, and Steele City, Neb. Gerald Herbert/AP hide caption

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Pipes for TransCanada's planned Keystone XL pipeline are stored in Gascoyne, N.D. The U.S. House has voted to approve the proposed project, which would allow crude oil to flow from Canada to the Gulf of Mexico. The Senate plans to vote Tuesday on legislation that would greenlight the project. Andrew Cullen/Reuters/Landov hide caption

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