President health care speech preview

WASHINGTON (AP) - President Barack Obama opens his stretch drive for a health care overhaul with a high-stakes speech to Congress tonight.

Aides portray the speech less as a re-launch than a closing argument. Press Secretary Robert Gibbs is promising new specifics in tonight's speech -- but says the president also remains flexible in pursuit of his goal of more affordable and reliable health coverage.

The White House acknowledges foes have managed to raise "big questions" in the minds of many Americans. Aides say Obama's top goal tonight is answering those questions, especially for the millions who have health coverage and are satisfied with it.

Yet this speech is also a bid to regain the head of steam Obama had on this issue before a brutal August of angry town hall meetings and slumping poll numbers.