It is also important to note that the mental disorder of psychosis is extremely rare, with about 3 in every 100 people experiencing a psychotic episode in their lifetime. The onset of psychosis, or similar disease processes like schizophrenia, usually begin in an individualâs late teens to early twenties.
1 Nationwide, 79% of undocumented immigrants are from Latin America a declining majority (52%) are from Mexico alone. 2  Most of the others are from Asia though Europe, Canada, and Africa account for hundreds of thousands of undocumented immigrants in the United States.
The Immigration Debate. The most important and avidly debated effects of undocumented immigration involve the United Statesâ economy and labor force. It is estimated that there are 12 million undocumented immigrants in the United States today, and their impact on the economy can be perceived as positive as well as negative.