Immigration Act Article 90
The staff of the National Immigration Agency shall dress in uniforms or produce work identification card to present their identities while performing their functions. The competent authority shall enact regulations that govern the uniforms and other matters that must be complied with.
中文原文 入出國及移民法第90條
移民署人員於執行職務時，應著制服或出示證件表明身分；其服制及其他應遵行事項之辦法，由主管機關定之。