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| 1990, June |
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| Pres. Salinas created the National Commission on Human Rights to deal with the widespread problem of police brutality. | 1 |
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| 1992, April 22 |
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| One hundred ninety people were killed and another 1,400 injured when a sewer blast destroyed 20 blocks in Guadalajara. In the aftermath of the explosion, the city's mayor resigned from his post, and a number of PEMEX executives were charged with negligent homicide. | 2 |
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| Nov. 28 |
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| The PRI selected Donaldo Colosio Murrieta, head of the government antipoverty program Solidaridad, as its presidential candidate to succeed Salinas de Gortari. | 3 |
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| Dec. 17 |
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| After having come to an agreement with Canada and the U.S. in August, Mexico signed the North American Free Trade Agreement (NAFTA). The treaty, creating a massive free trade area, was a victory for the neoliberal administration of Pres. Salinas, but met with mixed reactions in all three countries. It took effect on Jan. 1, 1994. | 4 |
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