Politics

Main articles: Politics of Mexico, Federal government of Mexico, State governments of Mexico, and Elections in Mexico Enrique Peña Nieto, current President of Mexico The National Palace, symbolic seat of the President and the cabinet.

The United Mexican States are a federation whose government is representative, democratic and republican based on a presidential system according to the 1917 Constitution. The constitution establishes three levels of government: the federal Union, the state governments and the municipal governments. According to the constitution, all constituent states of the federation must have a republican form of government composed of three branches: the executive, represented by a governor and an appointed cabinet, the legislative branch constituted by a unicameral congress and the judiciary, which will include called state Supreme Court of Justice. They also have their own civil and judicial codes.

The bicameral Congress of the Union, composed of a Senate and a Chamber of Deputies, makes federal law, declares war, imposes taxes, approves the national budget and international treaties, and ratifies diplomatic appointments. Seats to federal and state legislatures are elected by a system of parallel voting that includes plurality and proportional representation.

The Chamber of Deputies of the Congress of the Union is conformed by 300 deputies elected by plurality and 200 deputies by proportional representation with closed party lists for which the country is divided into 5 electoral constituencies or circumscriptions. The Senate is conformed by a total of 128 senators: 64 senators, two for each state and two for the Federal District, elected by plurality in pairs; 32 senators assigned to the first minority or first-runner up (one for each state and one for the Federal District), and 32 are assigned by proportional representation with closed party lists for which the country conforms a single electoral constituency.

Mexican Congress

The Executive, is the President of the United Mexican States, who is the head of state and government, as well as the commander-in-chief of the Mexican military forces. The President also appoints the Cabinet and other officers. The President is responsible for executing and enforcing the law, and has the authority of vetoing bills.

The Judiciary branch of government is the Supreme Court of Justice, comprising eleven judges appointed by the President with Senate approval, who interpret laws and judge cases of federal competency. Other institutions of the judiciary are the Electoral Tribunal, collegiate, unitary and district tribunals, and the Council of the Federal Judiciary.

Three parties have historically been the dominant parties in Mexican politics: the National Action Party: a right-wing conservative party founded in 1939 and belonging to the Christian Democrat Organization of America; the Institutional Revolutionary Party, a center-left party and member of Socialist International that was founded in 1929 to unite all the factions of the Mexican Revolution and held an almost hegemonic power in Mexican politics since then; the Party of the Democratic Revolution: a left-wing party, founded in 1989 as the successor of the coalition of socialists and liberal parties.

Foreign relations Prime Minister Stephen Harper, and Presidents Barack Obama and Felipe Calderón at the 2009 North American Leaders' Summit in Guadalajara. Main article: Foreign relations of Mexico

The foreign relations of Mexico are directed by the President of Mexico and managed through the Ministry of Foreign Affairs. The principles of the foreign policy are constitutionally recognized in the Article 89, Section 10, which include: respect for international law and legal equality of states, their sovereignty and independence, non-intervention in the domestic affairs of other countries, peaceful resolution of conflicts, and promotion of collective security through active participation in international organizations. Since the 1930s, the Estrada Doctrine has served as a crucial complement to these principles.

Mexico is one of the founding members of several international organizations, most notably the United Nations, the Organization of American States, the Organization of Ibero-American States, the OPANAL and the Rio Group. In 2008, Mexico contributed over 40 million dollars to the United Nations regular budget. In addition, it was the only Latin American member of the Organisation for Economic Co-operation and Development since it joined in 1994 until Chile gained full membership in 2010.

Mexico is considered as a regional power hence its presence in major economic groups such as the G8+5 and the G-20. In addition, since the 1990s Mexico has sought a reform of the United Nations Security Council and its working methods with the support of Canada, Italy, Pakistan and other nine countries, which form a group informally called the Coffee Club.

After the War of Independence, the relations of Mexico were focused primarily on the United States, its northern neighbor, largest trading partner, and the most powerful actor in hemispheric and world affairs. Mexico supported the Cuban government since its establishment in the early 1960s, the Sandinista revolution in Nicaragua during the late 1970s, and leftist revolutionary groups in El Salvador during the 1980s. Felipe Calderón's administration put a greater emphasis on relations with Latin America and the Caribbean.

Military Main article: Mexican Armed Forces Mexican Special Forces with Barrett M82 sniper rifles.

The Mexican Armed Forces have two branches: the Mexican Army (which includes the Mexican Air Force), and the Mexican Navy. The Mexican Armed Forces maintain significant infrastructure, including facilities for design, research, and testing of weapons, vehicles, aircraft, naval vessels, defense systems and electronics; military industry manufacturing centers for building such systems, and advanced naval dockyards that build heavy military vessels and advanced missile technologies.

In recent years, Mexico has improved its training techniques, military command and information structures and has taken steps to becoming more self-reliant in supplying its military by designing as well as manufacturing its own arms, missiles, aircraft, vehicles, heavy weaponry, electronics, defense systems, armor, heavy military industrial equipment and heavy naval vessels. Since the 1990s, when the military escalated its role in the war on drugs, increasing importance has been placed on acquiring airborne surveillance platforms, aircraft, helicopters, digital war-fighting technologies, urban warfare equipment and rapid troop transport.

Mexico has the capabilities to manufacture nuclear weapons, but forwent this possibility with the Treaty of Tlatelolco in 1968 and pledged to only use its nuclear technology for peaceful purposes. In 1970 Mexico's national institute for nuclear research successfully refined weapons grade uranium which is used in the manufacture of nuclear weapons but in April 2010, Mexico agreed to turn over its weapons grade uranium to the United States.

Historically, Mexico has remained neutral in international conflicts, with the exception of World War II. However, in recent years some political parties have proposed an amendment of the Constitution in order to allow the Mexican Army, Air Force or Navy to collaborate with the United Nations in peacekeeping missions, or to provide military help to countries that officially ask for it.