The territorial dispute between Oaxaca and Chiapas in Los Chimalapas began with the establishment in the region of a logging company from Michoacán, which in a non-transparent manner obtained concessions to exploit forest resources in the communal property of the Zoques of Santa María and San Miguel.

In subsequent years, new settlers from Chiapas settled on the lands of Los Chimalapas, creating new ejido groups, among them Díaz Ordaz, which was created by the Sánchez Monroy lumber company and is the largest settlement in the demarcation where the Congress of Chiapas established the municipality of Belisario Domínguez in 2011.

[1] The lands that correspond to this municipality are in litigation before the SCJN, in a dispute between the state governments of Oaxaca and Chiapas.

[2] In 2015, elections were held in the municipality of Belisario Domínguez, organized by the Institute of Elections and Citizen Participation of Chiapas, but the Zoques burned down the mayor's office and detained the personnel of the institute and one of the candidates, arguing that they were asserting the injunctions issued by the SCJN, in defense of the sovereignty of Oaxaca.

On 11 November 2021, the Mexican Supreme Court resolved the border dispute in Oaxaca's favour,[3][4] and annulled the 2011 decree by the Congress of Chiapas that had created Belisario Domínguez.