Education
Born in Tuxtla Gutiérrez, Chiapas, Valls Hernández studied law at the National Autonomous University of Mexico.
Born in Tuxtla Gutiérrez, Chiapas, Valls Hernández studied law at the National Autonomous University of Mexico.
He served as Magistrate of the Superior Court of Justice of the Federal District and served as Legal Director of the Mexican Social Security Institute (Mexican Institute of Social Security). Justice Valls Hernández also served as a Institutional Revolutionary Party deputy in the Chamber of Deputies (the lower house of Congress) during the LIII Legislature, representing Chiapas. President Vicente Fox nominated him as a Minister (Associate Justice) of the Supreme Court to fill the vacancy left after the death of Humberto Román Palacios in 2004.
Valls Hernández was confirmed by the Senate with 85 votes in October 2004.
Sergio died on December 3, 2014 at the age of 73.