An absence of 6 months or more, but less than 1 year, may disrupt continuous residence, raising a rebuttable presumption of interruption. Thus, an applicant with an absence from the U.S. between 6 months and 1 year has to prove that he or she did not abandon his or her residency during this time. The evidence of LPR intent discussed above can help overcome this presumption and establishing continuous residence.
An absence from the U.S. of a year or more will disrupt the period of continuous residence required for naturalization.There are a few exemptions for individuals who spent time abroad in military service; spouses and children living abroad with a spouse/parent serving abroad; certain international employees of the U.S. Government, American research institutes, public international organizations of which the U.S. is a member, or American businesses engaged in the development of foreign trade or commerce (an LPR in this situation will need to file an application to preserve residence); and certain LPR spouses of U.S. citizens working abroad for such institutions.
The discussion above is just a general overview of issues which may arise when LPRs travel, and should not be considered legal advice. These are complex issues, and require individualized case-by-case evaluation; permanent residents should consult a qualified immigration attorney before traveling on extended trips abroad or before any trip abroad if there are criminal issues.