The Congress of the Union (, ), formally known as the General Congress of the United Mexican States (''Congreso General de los Estados Unidos Mexicanos''), is the legislature of the

federal government of Mexico The Federal government of Mexico (alternately known as the Government of the Republic or ' or ') is the national government of the Mexico, United Mexican States, the central government established by its constitution to share sovereignty over the ...

. It consists of two chambers: the Senate of the Republic and the

Chamber of Deputies The chamber of deputies is the lower house in many bicameral legislatures and the sole house in some unicameral legislatures. Description Historically, French Chamber of Deputies was the lower house of the French Parliament during the Bourb ...

. Its 628 members (128 senators and 500 deputies) meet in

Mexico City Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...

Structure

The Congress is a

bicameral Bicameralism is a type of legislature that is divided into two separate Deliberative assembly, assemblies, chambers, or houses, known as a bicameral legislature. Bicameralism is distinguished from unicameralism, in which all members deliberate ...

body, consisting of two chambers: the Senate of the Republic and the

. Its structure and responsibilities are defined in the Third Title, Second Chapter, Articles 50 to 79 of the 1917 Constitution. The

upper chamber An upper house is one of two chambers of a bicameral legislature, the other chamber being the lower house. The house formally designated as the upper house is usually smaller and often has more restricted power than the lower house. A legis ...

is the Senate, ''Cámara de Senadores'' or ''Senado''. It comprises 128 seats: 96 members are elected by

plurality vote Plurality may refer to: Law and politics * Plurality decision, in a decision by a multi-member court, an opinion held by more judges than any other but not by an overall majority * Plurality (voting), when a candidate or proposition polls more ...

, with three members being elected in each state (two seats are awarded to the winning party or coalition and one to the first runner-up); the other 32 members are elected by

proportional representation Proportional representation (PR) refers to any electoral system under which subgroups of an electorate are reflected proportionately in the elected body. The concept applies mainly to political divisions (Political party, political parties) amon ...

in a single country-wide constituency. Senators serve six-year terms. The

lower house A lower house is the lower chamber of a bicameral legislature, where the other chamber is the upper house. Although styled as "below" the upper house, in many legislatures worldwide, the lower house has come to wield more power or otherwise e ...

is the Chamber of Deputies, or ''Cámara de Diputados''. It has 500 seats; 300 members are elected by plurality vote and the other 200 members are elected according to proportional representation (PR), through a system of regional lists (one for each of the five constituencies established for the election by law). Deputies serve three-year terms. The 200 PR seats are distributed generally without taking into account the 300 plurality seats (

parallel voting In political science, parallel voting or superposition refers to the use of two or more Electoral system, electoral systems to elect different members of a legislature. More precisely, an electoral system is a superposition if it is a mixture o ...

). Since 1996, however, a party cannot get more seats overall than 8% above its result for the PR seats (a party must win 42% of the votes for the PR seats to achieve an overall majority). There are two exceptions to that rule. A party can lose only PR seats by that rule (not plurality seats). Also, a party cannot get more than 300 seats overall (even if it has more than 52% of the votes for the PR seats).

Powers

The powers invested in Congress are defined in article 73 of the Constitution. Among its powers, Congress can admit new States into the Union, alter the allocation of powers granted to the federal government, lay and collect taxes, declare war (upon request of the Government), provide for and maintain the Union's armed forces, and coordinate economic activities. Article 74, 75 and 76 of the Constitution state that each Chamber can address specific matters. In fact, some powers are reserved either to the Chamber of Deputies or to the Chamber of Senators, making the Congress of the Union an example of imperfect bicameralism. For example, the former can approve the federal budget submitted by the Government, while the latter has the power to analyze the foreign policy of the Government, approve or dismiss the Presidential nominations of the Attorney General, Supreme Court Justices, diplomatic agents, general consuls, and senior civil and military officials.

Permanent Committee

The ', translated variously as the Permanent Committee or Standing Committee, is a body of 19 deputies and 18 senators that is responsible for tasks relating to the Congress when it is in recess.

Term

It is conventional to refer to each

Legislature A legislature (, ) is a deliberative assembly with the legal authority to make laws for a political entity such as a country, nation or city on behalf of the people therein. They are often contrasted with the executive and judicial power ...

by the

Roman numeral Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, ea ...

of its term. Thus, the current Congress (whose term lasts from 2024 to 2027) is known as the " LXVI Legislature"; the previous Congress (whose term lasted from 2018 to 2021) was the " LXIV Legislature", and so forth. The I Legislature of Congress was the one that met right after the Constituent Congress that enacted the

1857 Constitution The Political Constitution of the Mexican Republic of 1857 (), often called simply the Constitution of 1857, was the liberal constitution promulgated in 1857 by Constituent Congress of Mexico during the presidency of Ignacio Comonfort. Ratified ...

. Early in the 20th century, the revolutionary leader

Francisco I. Madero Francisco Ignacio Madero González (; 30 October 1873 – 22 February 1913) was a Mexican businessman, revolutionary, writer and statesman, who served as the 37th president of Mexico from 1911 until he was deposed in a coup d'état in Februa ...

popularized the slogan ''Sufragio Efectivo – no Reelección'' ("Effective suffrage, no reelection"). In keeping with that long-held principle, and until 2014, the 1917 Constitution stated that "Deputies and Senators could not be reelected for the next immediate term".

Reelection

On February 10, 2014, Article 59 of the Mexican Constitution was amended to allow reelection to the legislative bodies for the first time. Starting with the general election of 2018, deputies and senators are allowed to run for reelection. Members of the Chamber of Deputies may serve up to four terms of three years each while members of the Senate may serve two terms of six years each; in total, members of both houses will be allowed to remain in office for a total of 12 years.

Last election

Senate

Chamber of Deputies

References

Notes

External links

Chamber of DeputiesSenate
{{DEFAULTSORT:Congress Of Mexico Mexico, Congress of

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...