| Additional Protocol to the Treaty of Asunción on the Institutional Structure of MERCOSUR | |
|---|---|
| Signed | December 17, 1994 |
| Location | Ouro Preto |
| Effective | December 15, 1995 |
| Amendment | Treaty of Asunción |
| Signatories | |
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The 1994 Protocol of Ouro Preto was the continuation of economic policies setting up a customs union, as set forth four years earlier in the Treaty of Asunción by the four original Mercosur states, Argentina, Brazil, Paraguay and Uruguay.[1] It officially established Mercosur as an international customs union.