Immigration Act Article 30
When there are exceptional circumstances in the State, the National Immigration Agency may restrict aliens' residence locations, activities, or inform them of the rules they have to comply with in order to maintain public order or vital interests.
中文原文 入出國及移民法第30條
移民署在國家發生特殊狀況時，為維護公共秩序或重大利益，得對外國人依相關法令限制其住居所、活動或課以應行遵守之事項。