 On July 14, Catholic bishops endorsed plans for an economic boycott against the government, which was particularly effective in west-central Mexico (the states of Jalisco, Michoacan, Guanajuato, Aguascalientes, and Zacatecas).Catholics in those areas stopped attending movies and plays and using public transportation, and Catholic teachers stopped teaching in secular schools.The bishops worked to have the offending articles of the Constitution amended.