There are tens of thousands of people in Argentina who do not formally exist as far as the state is concerned.
“In 2009, the government of Argentina simplified the procedure, allowing parents to start the paperwork free of charge at the hospital.
Added to the number of undocumented migrants living in Argentina, the numbers are staggering.
As a child, going to school and to the doctor was an odyssey that required the assistance of several people who looked the other way.
A 2011 survey by Universidad Católica Argentina (UCA) and the Open Institute for the Development and Study of Public Policy (Iadepp) found that around 168,000 births in the country were never recorded.
Fuente: http://elpais.com/elpais/2016/05/09/inenglish/1462795067_005890.html
