Permission To Travel by Permanent Residents - Re-entry Permits
Those aliens who have been admitted to permanent residency are presumed to intend to reside and work permanently in the United States. They may lose the status if they abandon or fail to maintain their continued residency. Extended trips outside of the United States may reflect an intention to abandon U.S. permanent residency, especially if such extends beyond one year. A re-entry permit allows a permanent resident to re-enter after a prolonged absence from the United States for up to years. A request to re-enter is made prior to departure from the United States.