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Richard Nixon gives his well-known two-armed victory salute during a campaign stop in El Paso. (Getty Images)
Robert W. Murray
Vice-President of Research, Frontier Centre for Public Policy
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President Obama speaks at the southern site of the Keystone XL pipeline on March 22, 2012 in Cushing, Oklahoma. (Tom Pennington/Getty Images)
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An underground crude oil pipeline on March 23, 2014 near Lost Hills, California. (David McNew/Getty Images)