180天規定指的是break in residence for naturalization....

There is a rebuttal presumption that one breaks continuity in residence (5 or 3 years) for naturalization. If there is a break, there comes in the 4 years and 1 day rule. 

所有跟帖： 

• 很多人不信我們看條文講道理，來問的最希望聽到的是anecdotal evidence，好比信中醫一樣。 -檸檬椰子汁- ♂ (0 bytes) () 05/11/2022 postreply 19:28:24

• 你說的很有道理。隻不過海關不是永遠跟你講道理的，隻要讓他們懷疑，完全可以先沒收綠卡，就算投訴得直，也是費時失事。 -原上草2017- ♂ (302 bytes) () 05/13/2022 postreply 09:58:41