Illegal immigration 非法移民
(重定向自Undocumented alien)




Illegal immigration is the migration of people across national borders in a way that violates the immigration laws of the destination country. Some countries have millions of illegal immigrants. Immigration, including illegal immigration, is overwhelmingly upward, from a poorer to a richer country. However, it is also noted that illegal immigrants tend not to be the poorest within the populations they emigrate from.