Lawful permanent residents (i.e. green card holders) are expected to live in the U.S. permanently. You are free to travel overseas and temporary travel abroad does not impact your lawful permanent resident status. However, if you do not intend to make the United States your home, you risk losing your lawful permanent resident status. This is why lengthier trips outside the United States can be problematic. You are presumed to have abandoned your lawful permanent residence if you remain outside the United States for a year or more. But trips of less than a year can still be an issue if you did not intend to make the United States your permanent home. In determining your intent, Customs and Border Protection (i.e. CBP) officers will consider factors including whether your intent was to stay abroad temporarily, you maintained family and community ties to the United States, you maintained employment in the United States, you filed income taxes as a resident, you kept a United States mailing address, you continued to hold United States bank accounts, you had a valid driver’s license, and/or you owned property or ran a business in the United States.