回複：I94逾期不歸對以後辦綠卡沒有影響嗎?

Because you are US citizen and sponsor of your father's GC application using family base, your father green card application will not be affected by his I94逾期不歸. But he can not go outside of US until he gets the GC in case he may not be allowed to enter US in three years or ten years if his unlawful presence is >180 days or one year.