While the vice president's improvement is noteworthy, the latest NBC News poll also shows potential challenges for Democrats.

Thousands of people gathered on Wednesday morning in New York City to remember those whose lives were lost on Sept. 11, 2001.

Families of those killed clutched photographs of their loved ones, leaving flowers by their names at the 9/11 memorial and take rubbings where the names are etched on parapets surrounding the pools.

Kulick: The Department of Homeland Security and Transportation Security Administration were created after 9/11, among other ...

The case against the men accused of conspiring in the Sept. 11, 2001, hijackings that killed nearly 3,000 people in New York, at the Pentagon and in Pennsylvania. By Carol Rosenberg Five men are ...

On Sept. 11, 2001, thousands of passengers and crew were diverted to Gander in Canada because of the closing of U.S. airspace ...

On Sept. 11, 2001, thousands of passengers and crew were diverted to Gander in Canada because of the closing of U.S. airspace ...

Wednesday is the 23rd anniversary of the September 11, 2001, terrorist attacks. The day after, newspapers around the world captured the sadness, shock, and horror people felt. We compiled ...

New York City firefighters look at the destroyed facade of the World Trade Centre on September 13, 2001.Credit: Getty Images I was rattled over the week ahead. We lived under the Sydney flight ...