Danny Johnston / AP President Obama finally killed the Keystone XL pipeline on Friday, waiting until the last drop of suspense had drained from a debate that pitted environmentalists against champions of economic development and domestic oil production. By the time the president made the announcement with Secretary of State John Kerry and Vice President Joe Biden standing by his side, the administration’s almost comically-long deliberation over the proposal—some seven years—overshadowed the pipeline itself, which would have stretched nearly 1,200 miles from Canada to the Gulf Coast.