Immigration Act Article 63
For the purposes of implementing inspections of entry and exit, investigating cases of applications, illegal entry and exit overstaying a visit, overstaying the period of residence, engagement in unpermitted activities , or deportation, the staff of the National Immigration Agency shall carry out the functions pursuant to this chapter.The staff shall perform the functions mentioned in the preceding Paragraph on people of the Mainland Area, residents of Hong Kong or Macau.
中文原文 入出國及移民法第63條
移民署執行職務人員為辦理入出國查驗，調查受理之申請案件，並查察非法入出國、逾期停留、居留，從事與許可原因不符之活動或工作及強制驅逐出國案件，得行使本章所定之職權。
前項職權行使之對象，包含大陸地區人民、香港或澳門居民。
前項職權行使之對象，包含大陸地區人民、香港或澳門居民。