Politics at Play: Sen. Mary Landrieu's Support for Keystone XL Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email 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 Produced by PRI and WNYC