Thousands of people marched in Mexico City on July 22 to protest what they called the "imposition" of Enrique Peña Nieto, the official winner in the July 1 presidential election, and his party, the centrist Institutional Revolutionary Party (PRI). Signs and chants emphasized claims that Peña Nieto, the former governor of México state, had won the presidency through fraud, vote buying and biased coverage from the mainstream media, especially the giant television network Televisa, which demonstrators called a "lie factory."

Mexico City residents responded to the country's July 1 presidential and legislative elections with a massive and apparently spontaneous demonstration on July 7 repudiating the official results. Thousands marched from the Angel of Independence to the Zócalo plaza to protest what they called the "imposition" of Enrique Peña Nieto, the presidential candidate of the centrist Institutional Revolutionary Party (PRI). They charged his electoral victory was the result of fraud, vote buying and biased publicity by the media.

As of early on July 6, with 99.51% of polling places counted, Mexican officials said former México state governor Enrique Peña Nieto of the centrist Institutional Revolutionary Party (PRI) had been elected president with 38.22% of the valid votes cast on July 1. Center-left candidate Andrés Manuel López Obrador followed with 31.57% of the votes, and Josefina Vázquez Mota from the ruling center-right National Action Party (PAN) came in third with 25.42%. Gabriel Quadri, the candidate of the centrist New Alliance Party (Panal), trailed with 2.28%. The results—which matched a rapid count the Federal Electoral Institute (IFE) carried out the evening of July 1—followed a substantial recount of the votes after charges of irregularities.

The US Senate is expected to issue a report on July 17 about international money laundering through the London-based corporation HSBC, Europe's largest bank; much of the focus is reportedly on the laundering of drug money through the group's Mexican subsidiary, HSBC Mexico. The US Justice Department is also investigating, and the bank is expected to end up paying a fine of more than $1 billion, both for the Mexican operation and for HSBC's business activities with parties in Iran, in violation of US trade sanctions against that country.

The US House of Representatives voted on June 28 to hold Attorney General Eric Holder in contempt for refusing to comply with a subpoena for documents relating to Operation Fast and Furious, a bungled program in which the Arizona office of the Bureau of Alcohol, Tobacco and Firearms (ATF) inadvertently let about 2,000 firearms pass into Mexico during 2009 and 2010. The ATF is an agency of the Justice Department, which the attorney general heads.

On July 1 Mexicans went to the polls to elect a new president, and all 128 senators and all 500 legislative deputies in the federal Congress. New governors were being voted on in six of the 31 states—Chiapas, Guanajuato, Jalisco, Morelos, Tabasco and Yucatán—while the Federal District (DF, Mexico City) was choosing a new head of government, the 66 DF Assembly members and the 16 delegates who represent the city's delegaciones (boroughs). Some 79 million Mexicans were eligible to vote. (La Jornada, Mexico, July 1)

Three Federal Police officers were killed in a shoot-out at a food court in Terminal 2 of Mexico City's Benito Juárez International Airport on June 25, sending travelers scrambling for cover under tables and into bathrooms. Although initial accounts said police were met with gunfire when they tried to arrest suspected traffickers, the Public Security Secretary later admitted that both sides in the shoot-out were uniformed Federal Police. A team of agents was apparently trying to arrest two other uniformed agents, who responded with gunfire. No civilians were reported wounded. Prosecutor General Marisela Morales says she has ordered in investigation into cartel infiltration of police at the airport. Mexico City's own Federal District Prosecutor General of Justice (PGJDF), which oversees a "Secure Airport" program to coordinate police forces at Benito Juárez, said it had detected no signs of personnel at the facility being co-opted by traffickers. (Excelsior, Notimex, El Universal, June 26; LAT, June 25)

US president Barack Obama invoked executive privilege on June 20 to justify the Justice Department's refusal to provide the House of Representatives with some of its documents relating to Operation Fast and Furious, a bungled program in which the Bureau of Alcohol, Tobacco and Firearms (ATF) inadvertently let about 2,000 firearms "walk" into Mexico during 2009 and 2010. Rep. Darrell Issa (R-CA), the chair of the House Oversight and Government Reform Committee, had subpoenaed the documents from the Justice Department. The House of Representatives could vote to hold Attorney General Eric Holder in contempt for refusing to comply with the subpoena.