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North American energy independence.
• Foes say the pipeline would carry "dirty oil" that contributes to global warming. The State Department report says oil derived from tar sands in Alberta generates about 17 percent more greenhouse gas emissions than traditional crude. But the report makes clear that other methods of transporting the oil -- including rail, trucks and barges -- would release more greenhouse gases than the pipeline.
• The news conference in support of the pipeline came as environmental activists held vigils throughout the country on Monday to protest the pipeline, including one outside the White House attended by about 250 people. Opponents also are scheduling "pipeline meet-ups" throughout February to encourage people to raise the issue with candidates in the 2014 elections.
• Joining Landrieu and Barrow at the Capitol event Tuesday were Democratic Sens. Joe Manchin of West Virginia, Heidi Heitkamp of North Dakota and Mark Pryor of Arkansas. Landrieu and Pryor face tough re-election fights this year in energy-producing states where the pipeline is popular and Obama is not. Republican Mitt Romney easily carried Louisiana and Arkansas in the 2012 presidential election.
• Landrieu, who is expected to become chairwoman of the Senate Energy Committee later this month, said she is "open to whatever needs to be done" to approve the pipeline, including use of the project as a bargaining chip with Republicans in upcoming talks over raising the federal debt limit.
• Rep. Lee Terry, R-Neb., said GOP House leaders have no intention of attaching the pipeline to any must-pass legislation before a 90-day comment period concludes in May.
• Follow Matthew Daly on Twitter: https://twitter.com/MatthewDalyWDC
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• PIERRE, S.D. (AP) -- The South Dakota Senate has unanimously approved a bill banning the word "squaw" and allowing the word "Negro" in the state's place names.
• Legislators approved the measure Tuesday.
• The Legislature previously ruled that both terms should be removed from all names of South Dakota's creeks, lakes, buttes and other geographic features.
• But African American leaders argued that the term "Negro" is not offensive and removing it from names would harm the legacy of African Americans in the state.
• All but six features that included "squaw" in their names have been renamed,

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