Introduction
From the mid-1990s to the present – a period of three decades – there has been almost constant constitutional change in Latin America. Some of that has involved what can be called big ticket changes: the drafting and approval of entire new constitutions through the election of constituent assemblies, the holding of referenda, and the mobilisation of special congressional majorities. Time and effort have also gone into much more piecemeal changes – the bit-by-bit amendment of constitutional clauses through congressional votes. Most major recent government reforms in areas such as pensions, energy policy, crime and criminal justice, as well as others, have all required constitutional amendments.
An initial question to pose is whether the constitutional changes of that three-decade period shared common characteristics. According to Rodrigo Uprimny, a constitutional expert at the Universidad Nacional de Colombia, they did, at least up to a point. In terms of dogma and ideology, Uprimny identifies at least nine shared themes. One is that the new constitutions are reassessing the meaning of national unity, rejecting a homogenised view of culture for a greater appreciation of its multiethnic and multicultural dimensions. Two, religion and the Catholic Church are less central than they used to be, with new constitutions occupying more secular ground and recognising other religions. Three, traditionally discriminated groups including indigenous and black communities now get greater protection, particularly so in the Ecuadorean (2008) and Bolivian (2009) constitutions, which also recognise indigenous languages.
Four, there is a focus on expanding citizen rights beyond traditional civil rights (privacy, due process, freedom of expression, the right to vote), to include rights to education, housing and health, the right to the environment, and the rights of nature also known in Andean indigenous culture as Pachamama. Five, the new constitutions are more open to the incorporation into the domestic legal system of international human rights treaties. Six, recognition of greater openness to multiculturalism in law has to some extent eroded the central role traditionally played by law and government regulation.
Seven, the new constitutions promote equality on grounds of race and gender; some in addition order affirmative action policies to ensure that such equality is effectively achieved. Eight, some countries now speak of a “state of justice and rights” and seek to move beyond the traditional European definition of the functions of the state. Finally, nine, to avoid being purely rhetorical in nature, many countries have included “protection and warranty” mechanisms to try and ensure rights are honoured in practice. These include the creation of ombudsmen and affirming the power of courts to issue writs in defence of fundamental rights, known as acciones de tutela.
Apart from the more ideological angle, Uprimny also looks at changes in the content and functioning of new constitutional mechanisms. Here, he first highlights attempts to strengthen democracy (which he attributes to a reaction against the military dictatorships of the 1970s and 1980s). This is backed by the growth in direct democracy mechanisms such as popular consultations and referenda, but also the creation of citizen bodies, empowered for example to scrutinise the management of public services. Secondly, he notes the grant of greater autonomy to electoral authorities, and thirdly, a much greater emphasis than before on decentralised government. Regional inequality has been an important recurring issue, particularly in countries where high-value mining or oil and gas development is seen as unfairly benefiting the citizens of one area at the expense of others.
Fourthly there have been efforts to increase constitutional oversight, for example by the creation in Venezuela of an entirely new branch of power, called “citizens power”. Colombia’s constitution created new bodies of control, including a public ministry (prosecutor general and defender of the people) and a controller general. Fifthly, there have been efforts to strengthen a perceived weakness – the functioning of the judiciary. This reflects the perceived need to increase the efficiency of crime prosecution and conflict resolution, but also to bolster judicial independence. It included efforts to reduce political manipulation of the appointment of judges, by creating autonomous bodies charged with “hiring and firing” top magistrates. In sixth place, Uprimny notes a desire – up to a point – to reduce “presidentialism”, the reliance on a strong executive power.
There were indeed some new limitations imposed on the powers of Latin American leaders, although these fell short of constituting a parliamentary or prime ministerial model along European or Canadian lines. A somewhat chequered story also unfolded around term limits. In the 1990s and 2000s, strong leaders including Carlos Menem (1989-1999) in Argentina, Fernando Henrique Cardoso (1995-2003) in Brazil, Alberto Fujimori (1990-2000) in Peru, Álvaro Uribe (2002-2010) in Colombia, and Hugo Chávez (1999-2013) in Venezuela all enjoyed consecutive re-election, where necessary changing the constitutional rules to make that possible. However, in more recent times constitutional amendments have sought to ban consecutive re-election.
Finally, in seventh place Uprimny highlights a tendency to grant powers to autonomous state agencies carrying our regulatory and audit roles across various areas of economic activity. More recently this has been rejected in some cases such as in Mexico in 2024-2025. Some experts have in any case argued that the existence of autonomous bodies, depending how they are set up, may conflict with the traditional distribution of three powers – executive, legislative, and judiciary. In terms of overall conclusions, Uprimny argues that the new wave of constitutions has played its part in the dramatic shrinking of authoritarian military rule across the continent, a “profound change” compared to the high frequency of military coups in the 19th and 20th centuries. As a consequence, he asserts that “Latin America is now enjoying its first true wave of constitutionalism.”
At this point in the discussion, it may be useful to make several qualifications. Latin America is not politically or socially uniform, and even in an age of democracies, it follows that the constitutions written by different countries will have points of divergence. To take one example, the constitutional importance of indigenous communities will vary somewhat, according to their numerical presence and history in any given society. There are clearly important common themes in regional constitutional writing, but these should not be over-emphasised. It is also worth remembering that the pendular political swings between left-wing and right-wing governments may also play an important role. Although constitutions often play a stronger role when they are perceived as being impartial and apolitical, the reality is that all new constitutions or constitutional amendments have been drafted, negotiated and approved at one time or another, as part of some kind of politically motivated project. Different projects will produce different texts, not only between different Latin American countries, but between different periods of time within the same country.
It is also worth noting that a recent period of largely centre-left rule across the region (the so-called “pink tide”) is beginning to wane. A “new right” has emerged around Western Hemisphere leaders like Donald Trump in the US (who was in office in 2017-2021 and returned to the White House for a second, non-consecutive term starting in January 2025). Similar thinking far-right leaders are present in Europe, among them Viktor Orbán of Hungary (in office since 2010), and in Latin America, where the rollcall is led by Jair Bolsonaro of Brazil (2019-2023), Javier Milei of Argentina (since 2023), and Nayib Bukele of El Salvador (since 2019). On the one hand these new leaders are fighting against a system of constitutional checks and balances designed to limit their power. On the other, over a medium-term future their much more conservative ideas, for example on issues like abortion, marriage, and gender, are likely to influence future constitution-writing. Just as there is a political pendulum, so there may be a constitutional one, which comes into operation after a time lag of some years.


