によって mik brown 2年前.
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High number of irregular immigrants
Criminal immigrants
Economic immigrants
World's only direct land border between the developed and developing worlds.
Very long and difficult frontier to "seal"
Violence
Aging populations to developed world
Developing to developed world
Positive attributes to attract immigrants to different destinations
Job seeking
Motives to leave a political jurisdiction
Promise of materially better life
Avoid conflict or discrimination
Improve one's living conditions by relocation
Irregular immigrants
Illegal, undocumented, unauthorized
“those who enter a country without proper authorization or who have violated the terms of stay of the authorization they hold, including by overstaying.”
Legal immigrants
Asylum seekers
Refugees
