Constitution of Argentina in the context of Santa Fe, Argentina

The United Provinces of the Río de la Plata (Spanish: Provincias Unidas del Río de la Plata), earlier known as the United Provinces of South America (Spanish: Provincias Unidas de Sudamérica), was a name adopted in 1816 by the Congress of Tucumán for the region of South America that declared independence in 1816, with the Sovereign Congress taking place in 1813, during the Argentine War of Independence (1810–1818) that began with the May Revolution in May of 1810. It originally comprised rebellious territories of the former Spanish Viceroyalty of the Río de la Plata dependencies and had Buenos Aires as its capital.

The name Provincias del Río de la Plata (formally adopted during the Cortes of Cádiz to designate the Viceroyalty of the Río de la Plata) alludes to the Junta Provisional Gubernativa de las Provincias del Río de la Plata or Primera Junta. It is best known in Argentinean literature as Provincias Unidas del Río de la Plata ('United Provinces of the River Plate' i.e. 'river of silver'), this being the most common name (since 1811) in use for the country until the enactment of the 1826 Constitution. The Argentine National Anthem refers to the state as "the United Provinces of the South". The Constitution of Argentina recognises Provincias Unidas del Río de la Plata as one of the official names of the country, referred to as "Argentine Nation" (Nación Argentina) in modern legislation.

Prior restraint (also referred to as prior censorship or pre-publication censorship) is censorship imposed, usually by a government or institution, on expression, that prohibits particular instances of expression. It is in contrast to censorship that establishes general subject matter restrictions and reviews a particular instance of expression only after the expression has taken place.

In some countries (e.g., United States, Argentina) prior restraint by the government is forbidden, subject to exceptions, by their respective constitutions.

The Argentine War of Independence (Spanish: Guerra de Independencia Argentina) was a secessionist civil war (until 1816) fought from 1810 to 1818 by Argentine patriotic forces under Manuel Belgrano, Juan José Castelli, Martin Miguel de Guemes and José de San Martín against royalist forces loyal to the Spanish crown. On July 9, 1816, an assembly met in San Miguel de Tucumán, declaring independence with provisions for a national constitution.

The Argentine Confederation (Spanish: Confederación Argentina) was the last predecessor state of modern Argentina; its name is still one of the official names of the country according to the Argentine Constitution, Article 35. It was the name of the country from 1831 to 1852, when the provinces were organized as a confederation without a head of state. The governor of Buenos Aires Province (Juan Manuel de Rosas during most of the period) managed foreign relations during this time, Under his rule, the Argentine Confederation engaged in conflicts with Brazil, Bolivia, Uruguay, France and the United Kingdom, as well as other Argentine factions during the Argentine Civil Wars.

Rosas was ousted from power in 1852 by Justo José de Urquiza, after the battle of Caseros. Urquiza convened the 1853 Constituent Assembly to write a national constitution. Buenos Aires resisted Urquiza and seceded from the Confederation in 1852, becoming the State of Buenos Aires; the province would return to Argentina in 1861.

The president of Argentina, officially known as the president of the Argentine Nation, is both head of state and head of government of Argentina. Under the national constitution, the president is also the chief executive of the federal government and commander-in-chief of the armed forces.

Throughout Argentine history, the office of head of state has undergone many changes, both in its title as in its features and powers. The current president Javier Milei was sworn into office on 10 December 2023. He succeeded Alberto Fernández.

The current Constitution of the Argentine Republic dates back from 1853. The Argentine Constitution of 1853 was approved in 1853 by almost all of the provincial governments with the exception of Buenos Aires Province, which remained separate from the Argentine Confederation until 1859. After several modifications to the original constitution and the return of power to Buenos Aires' Unitarian Party, it was sanctioned on May 1, 1853, by the Constitutional Convention that had gathered in Santa Fe. The document was promulgated by the provisional director of the national executive government, Justo José de Urquiza, who was a member of the Federalist Party. Following the short-lived constitutions of 1819 and 1826, it was the third constitution in the history of the country.

Despite several reforms of varying importance, the 1853 constitution formed the basis of the current Argentine juridical system. It was closely inspired by the juridical and political doctrines of the United States Constitution. It established, for example, a Republican division of powers, a high level of independence for provinces, and a federal power controlled by a strong executive government that was limited by a bicameral national congress to balance the population's representation. It also drew from the previous constitutions, as well as the pioneering works of the jurist Juan Bautista Alberdi.

The Chamber of Deputies (Spanish: Cámara de Diputados de la Nación), officially the Honorable Chamber of Deputies of the Argentine Nation, is the lower house of the Argentine National Congress (Spanish: Congreso de la Nación). It is made up of 257 national deputies who are elected in multi-member constituencies corresponding with the territories of the 23 provinces of Argentina (plus the Federal Capital) by party list proportional representation. Elections to the Chamber are held every two years, so that half of its members are up in each election, making it a rare example of staggered elections used in a lower house.

The Constitution of Argentina lays out certain attributions that are unique to the Chamber of Deputies. The Chamber holds exclusive rights to levy taxes; to draft troops; and to accuse the president, cabinet ministers, and members of the Supreme Court before the Chamber of Senators. Additionally, the Chamber of Deputies receives for consideration bills presented by popular initiative.