An Iraqi policeman stands guard while hundreds of vehicles line up to be searched at a checkpoint in Baghdad on Tuesday, Dec. 28, 2010. Security officials are investigating the possibility of removing some of the hundreds of checkpoints across the city in a sign of the improving security situation. The checkpoints are designed to catch insurgents, but they also slow traffic in the already congested city. (AP Photo/Hadi Mizban)

Photo by: Hadi Mizban

An Iraqi policeman stands guard while hundreds of vehicles line up to be searched at a checkpoint in Baghdad on Tuesday, Dec. 28, 2010. Security officials are investigating the possibility of removing some of the hundreds of checkpoints across the city in a sign of the improving security situation. The checkpoints are designed to catch insurgents, but they also slow traffic in the already congested city. (AP Photo/Hadi Mizban)