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.
From 2007 to 2009, the report says, more undocumented Mexicans left the United States than came here illegally. But about six million Mexican-born immigrants still make up 52 percent of the unauthorized population, according to the Pew estimates.