David Welna David Welna is NPR's national security correspondent.
Would Independent Lieberman Go GOP?
Immigration Bill Fails on Senate Floor
Senator's Turnaround on Iraq Marks Watershed
Senate Approves Bill to Boost Fuel Economy
Energy Bill Passes Key Test in Senate
Senate to Vote on Coal Industry Subsidies
U.S. Car Makers Warm to Parts of Energy Bill
Senate Prepares to Hash Out Energy Bill Issues
Better Gas Mileage Focus of Energy Bill Debate
Democrats Building Energy Bill Face Competing Goals
Immigration Debate Reveals GOP Divide
'War Czar': Iraq Surge Has Mixed Results
Cases Thrown Out, Congress Considers Tribunals
Minnesota's Democratic Rep. Walks Line on Iraq War
Iraq Study Group Report May Resurface