Some insiders say Joe Biden's addition to the Democratic ticket changes the game for John McCain because Biden's strengths expose some weaknesses in potential Republican running mates.

A day after Hillary Clinton emphatically urged her millions of supporters to back Barack Obama and declared, "No way. No how. No McCain," her husband is expected to attack John McCain when he takes the stage at the Democratic National Convention.

After battering Haiti with powerful winds and heavy rain, Hurricane Gustav weakens to a tropical storm. At least 11 deaths are blamed on Gustav. Fuel prices soar amid fears the storm could regain strength and move into the Gulf of Mexico as a Category 3 hurricane later this week.

The U.S. asked Iraq for permission for troops to maintain a presence there until 2015, Iraq's president says. Iraq wanted the troop presence to end in 2010, and the two sides agreed to make it 2011, he says.

An advertisement linking kids with colon cancer to eating hot dogs for lunch has drawn fire from critics for featuring children who don't actually have cancer, and for overstating the link between colon cancer and cafeteria hot dogs. While eating processed meats might increase some risk of the disease, experts say it's a very small percentage.