In Fargo, N.D., Barack Obama was asked if he's considering changing his policy on Iraq. He said:

my position has not changed but keep in mind what that original position was. I have always said that I will listen to commanders on the ground;

I’ve always said that the pace of withdrawal would be dictated by the safety and security of our troops and the need to maintain stability.

That assessment has not changed and when I go to Iraq and I have a chance to talk to some of the commanders on the ground, I’m sure Ill have more information and will continue to refine my policies.

Major Garrett reports that Obama "was then asked if this meant he was open to a timeline for troop withdrawals that might take longer than 16 months."

Obama answered:

I mean we can chase this around you know for a long time.

What I’ve said repeatedly is that my goal is to end this conflict in a responsible way as quickly as possible. My 16-month timeline, if you examine everything I’ve said, was always premised on making sure that our troops were safe. I said based on what the information we had received from our commanders that 1-2 brigades per month could be pulled out safely from a logistical perspective. And my guiding approach continues to be that we’ve got to make sure that our troops are safe, and that Iraq is stable. And I’m going to continue to gather information to find out whether those conditions still hold and you know my job is to make sure that the strategic issues that we face, not just in Iraq but in Afghanistan in Iraq, and Pakistan that those are all taken into account and dealt with in a way that enhances Americas national security interest over the long term.