A permanent resident card is not a valid entry document when the resident is abroad for 365 days or longer. That’s why a person who plans to be abroad for one year or longer should apply for a U.S. Citizenship and Immigration Services advanced parole document before leaving.Click to see full answer. Subsequently, one may also ask, can I lose my US citizenship if I live abroad?Your residency status abroad has no effect on your U.S. citizenship. The only way to lose your U.S. citizenship is to renounce it formally. You can’t lose your U.S. citizenship accidentally. how long a US citizen can stay in the Philippines? 30 Days Similarly, how long can a US citizen child stay out of the country? They can stay up to 6 months without permission. Beyond that, you need to get some paperwork done.How long can a US citizen stay out of the country 2019?You will not lose your citizenship no matter how long you live abroad. There is no 3 year rule, nor any other rule limiting a citizen’s stay outside the U.S. Only a permanent residence (“green card”) can be abandoned by an extended absence from the U.S.