Immigration Act Article 52

The government may dissuade nationals from planning to immigrate to countries or regions where wars or epidemics are ongoing or where nationals are rejected.
中文原文 入出國及移民法第52條
政府對於計劃移居發生戰亂、傳染病或排斥我國國民之國家或地區者,得勸阻之。

English translation for reference only; the Chinese text prevails. Not legal advice.