First, since I know there are SO many overly sensitive people here, first I am going to say THIS IS NOT an attack on anybody. However there is no such thing as an "illegal" person in Argentina. A person can have an "irregular" immigration status, however that is NOT illegal, it's an infraction for which there is absolutely no sanction. It may be disadvantageous to the person with "irregular" immigration status, as they won't be able to obtain employment in blanco, a DNI, CUIT or CUIL. However nobody, not the police, gendarmería, or anybody else can detain you, arrest you, or do anything at all to you simply for not having a "regular" immigration status. It's one of the great advantages to this country. Open arms to all who want to be here, if you can make it and survive, you decide whether to stay or not. Nobody will force you to leave, ever.