Federal Constitution of the United Mexican States (1824)
Of the District Judges.
Article 143. The United Mexican States shall be divided into a certain number of districts, in each of which there shall be a judge skilled in law (letrado), and who shall take cognisance, without appeal, of all causes in which the Union is interested, and whose value does not exceed five hundred dollars, and in the first instance of all causes which belong to the jurisdiction of the circuit courts.
Article 144. To be judge of the district court, it is necessary to be a citizen of the Union, and twenty-five years of age. The president appoints these judges from three candidates named by the supreme court.