If there would be a necessity, why not? The Americans have in many places military bases.
He was always planning to have different places to hide himself from, from the people. Iraq is a wide country. You have many places that some person can hide themselves for awhile. But I don't think he will be able to hide himself forever.
According to our knowledge and information all over Iraq, especially in those places who are in direct contact with American soldiers dealing with the people, they are very friendly,