Lawful permanent residents may depart the United States for extended periods without loss of status, as long as they are not deemed to have abandoned their residence in the United States.
A citizen who leaves the US loses their status.
mnli hypothesis: A citizen who leaves the US loses their status. premise: Lawful permanent residents may depart the United States for extended periods without loss of status, as long as they are not deemed to have abandoned their residence in the United States.