You may be found to have abandoned your permanent resident status if you:
* Move to another country intending to live there permanently.
* Remain outside of the U.S. for more than one year without obtaining a re-entry permit or returning resident visa. However in determining whether your status has been abandoned, any length of absence from the U.S. may be considered, even if it is less than one year.
* Remain outside of the U.S. for more than two years after issuance of a re-entry permit without obtaining a returning resident visa. However in determining whether your status has been abandoned any length of absence from the U.S. may be considered, even if it is less than one year.
* Fail to file income tax returns while living outside of the U.S. for any period.
* Declare yourself a "nonresident" on your tax returns.