Landrieu and Roberts Get Personal on Keystone

Tuesday's Senate debate included some personal barbs.

Senator Mary Landrieu, a Democrat from Louisiana, listens during a news conference on federal funding for Planned Parenthood at the U.S. Capitol in Washington, D.C., U.S., on Wednesday, April 13, 2011.

Photographer: Brendan Hoffman/Bloomberg

Today's debate on whether to build the Keystone pipeline made for predictably bland C-SPAN viewing—until, that is, a reality TV-worthy personal exchange between two senators erupted:

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