The Constitution of Argentina — The World's Seventh Oldest Charter, Built by Exiles Fighting a Dictator on the Battlefield.
Argentina — Constitution Profile
| ๐ Active Since | May 1, 1853 |
| ๐️ Government | Federal Presidential Republic |
| ๐ Capital | Buenos Aires |
| ๐ Global Rank | 7th oldest national constitution still in effect |
| ✏️ Major Reforms | 1860, 1866, 1898, 1949, 1957, 1994 |
| ๐ Original Articles | 107 |
The Constitution Born on a Battlefield, Not in a Library
Argentina's founding charter does not begin with peaceful deliberation. It begins with one provincial governor turning his army against the man who had ruled the country for over two decades.
Rosas' reluctance to call for a new assembly to write a constitution led General Justo Josรฉ de Urquiza from Entre Rรญos to turn against him. Urquiza defeated Rosas during the battle of Caseros and called for such an assembly.
For the generation of '80, the founders of the first liberal conventions on Argentine historiography, the constitution represented a true foundational act that broke the long government of Juan Manuel de Rosas. The document Argentina lives under today exists only because one general decided that writing a constitution required first winning a war.
The Convention Built Almost Entirely From Men Who Had Just Returned From Exile
The men who actually wrote Argentina's constitution were not a cross-section of ordinary society. They were, overwhelmingly, intellectuals who had spent years fleeing the very regime they had just defeated.
The historical revisionism in Argentina has emphasised that these congressmen were not completely representative of the provincial population — the selection of the delegates of all the provinces was composed of jurists and intellectuals, many of which had been in exile for years during the government of Rosas.
The Unitarian Doctors — Rivadavia, Echeverrรญa, Alberdi — would represent the educated elite, from whose plumes would flow the constitution. Years of forced exile had given them time to study foreign legal systems closely — and one in particular caught their attention more than any other.
A Constitution Modeled So Closely on America's That Critics Still Argue About It
Argentina's founders did not simply borrow a few ideas from the United States. They built their entire framework around it.
Its first version was written in 1853 by a constitutional assembly which gathered in Santa Fe; the doctrinal basis was taken in part from the United States Constitution.
When the wealthy province of Buenos Aires finally rejoined the federation in 1860, it pushed the document even further in that direction. Virtually all of the changes proposed brought the Argentine Constitution even closer into line with the Constitution of the United States, and the changes were justified on the grounds that Argentina needed to follow the U.S. model more closely.
Others have charged the introduction with being overtly influenced by the United States Constitution instead of earlier models found in Argentine history — a criticism that has followed the document for more than a century and a half.
The Province That Refused to Join Its Own Country
Not every province agreed to live under the new constitution right away. The country's wealthiest and most powerful region simply walked away from the table.
The Constitution was not immediately accepted by Buenos Aires, which seceded from the Confederation; it rejoined a few years later.
It took another military defeat to force the issue. In 1861, at Pavรณn, the provincial troops of Buenos Aires under Bartolomรฉ Mitre defeat the national army under Urquiza. Only after that battle did Argentina's constitutional union finally include the province that controlled its most important port.
The Colonel Who Rewrote the Constitution to Match His Own Politics — and Was Then Erased From It
By the mid-twentieth century, Argentina's constitution had become a direct battleground in the struggle over one man's legacy.
In 1930 the first of several military coups in the twentieth century seriously influenced the effective force of the constitutional text. During a period of democratic instability, President Juan Domingo Perรณn backed the first amending of the constitution, in 1949.
Perรณn's reform did not survive his fall from power. In 1956, special elections were held to change the constitution. Twenty-five percent of all ballots were left blank as a protest by the banned Peronist party. The Assembly was greatly weakened by this and was only able to restore the Constitution of 1853 with the addition of Article 14 bis, which listed some social rights.
One leader's constitutional legacy was undone within a decade by a country still openly forbidding his own political movement from even appearing on the ballot.
The Reform Negotiated by a President and the Man He Had Just Defeated
Argentina's final major constitutional overhaul was the product of an extraordinary political handshake — between sitting power and recent opposition.
The Olivos Pact signed by President Carlos Menem and former president Raรบl Alfonsรญn in 1994 facilitated presidential reelection in exchange for some other reforms aimed at reducing executive powers and modernizing the constitution.
The reform reshaped how power itself worked at the top of government. The post of the Chief of the Cabinet Ministers was created to serve as chief operating officer, intended to reduce the presidentialist character of the country's presidential form of government.
Yet the reform's architects later admitted its limits. Many key changes, such as the creation of the office of Chief of the Cabinet of Ministers, intended to diffuse the power of the President, have had little practical impact on Argentine government. The President continues to act as head of a governmental structure where most expectations and authority are focused on his office.
The Clause That Quietly Made International Law Part of the Constitution Itself
Buried within the 1994 reform is a provision that fundamentally changed the legal weight of human rights in Argentina — without most citizens ever noticing the shift happen.
Perhaps the most important part of the reform was the addition of Article 75, section 22, which elevates ten international human rights declarations and treaties to the same status as the Constitution itself, essentially incorporating them into the Constitution.
This came directly out of the trauma of Argentina's recent past. During the 1976–1983 dictatorship, military and security forces hunted down political dissidents in what became known as the Dirty War. The 1994 reform was, in part, a constitutional promise that the legal protections violated during those years would never again sit outside the nation's highest law.
Constitution at a Glance
| Detail | Information |
|---|---|
| Battle of Caseros | February 1852 |
| Constitutional Congress Convened | Santa Fe, 1852–1853 |
| Original Constitution Adopted | May 1, 1853 |
| Buenos Aires Rejoined | 1860 (after Battle of Pavรณn, 1861) |
| Original Articles | 107 |
| Major Reforms | 1860, 1866, 1898, 1949, 1957, 1994 |
| 1994 Reform Pact | Olivos Pact — Menem and Alfonsรญn |
| Global Ranking | 7th oldest constitution in continuous effect |
| Presidential Term | 4 years (changed from 6 in 1994) |
| Official Religion Clause | "Supports" Roman Catholic faith (no longer requires Catholic president since 1994) |
๐ฅ Read the Constitution of Argentina
Read the complete, official English text of the Constitution of the Argentine Nation:
๐ Read Constitution of Argentina — Full Text
Written by exiles who had just defeated the dictator they fled from. Modeled so closely on the United States that the debate still hasn't ended. Reformed by a president and his former rival shaking hands. Which part of Argentina's constitutional story surprised you the most? Tell us in the comments below.

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