Changed Surnames And Buying Air Tickets For Us Green Card Holders in Visas and migration to other countries Posted July 2, 2012 if your wife stays in LOS for more than a year she will loose her GC. over time, if she doesn't spend 6 months per year on US soil she will loose it as well. I'm not sure what your plans are but thought I'd write about it.My friend used to have a GC and last year it was confiscated upon his return as he had left for too long. Sokh Dee '-) Yes, we are aware of that requirement. We're definitely just visiting Thailand for about a month. We have no plans to stay there long term. When she obtains US citizenship, our long term plans might change however. Thanks for the note anyway.