我母親去年回中國的時候已經持有綠卡，她在中國呆了5個月後返美。 但她返回美國時沒有把綠卡給海關的人看， 結果護照上給蓋了6個月的期限（當時她護照有十年有效簽證）。 請問， 這對她下次回中國有沒有什麽影響？
-This is a serious mistake which may have resulted in her green card invalid because she used the B-2 visa to enter US, not the green card. Is she currently physical present in US? If yes, she needs to go to the local CBP Deferred Inspection Office as soon as possible to see whether it can be fixed. Find the local CBP Office in your area at this link:
需要做什麽補救措施嗎？ 謝謝老師！
