There are two options to obtain a permanent residence: to be a relative of a native Argentine or to be a relative of a foreigner with a continuous residence in the country of at least 3 years.
Argentine criminal record certificate
International criminal record certificate
Seal of entry to the country
If it was issued abroad: it must be legalized at the Argentine Consulate, or Apostille, if the country had ratified the Hague Convention. If it was issued by consular representations in the national territory: it must have the legalization of the Ministry of Foreign Affairs and Worship, except MERCOSUR. If it was issued in a foreign language: it must have the translation into Spanish made by a National Public Translator (Art. 6 Law 20,305) and legalized by the Translators Association, except the Portuguese language for Brazil. Immigration Direction may request if deemed necessary, additional detailed documentation.