回複：回複：如果要回國常住，綠卡和稅務的問題

returning to the U.S. within every 180 days is not safe option. You can use it for 2-3 time. If you use more, your risk will increase.

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谘詢服務, 無居保持移民身份, 無居留入籍, 入籍後保持中國國籍和護照