Politics at Play: Sen. Mary Landrieu's Support for Keystone XL

Sens. Mary Landrieu, D-La., and Joe Manchin, D-W.Va., conduct a news conference on the Keystone XL pipeline in the basement of the Capitol, November 12, 2014.
( Tom Williams/CQ Roll Call / Getty )

Produced by Jillian Weinberger

Hosted by Todd Zwillich

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