I read this Wall Street Journal story about Mexico's justice system several days ago and am still wondering how one would begin to reform such a system:
Unlike the U.S., Mexico's legal system has no jury trials. In the majority of cases, there are also no oral arguments, meaning lawyers don't stand in front of a judge to plead their client's case. Judges usually never meet the accused. Everything is done via paperwork. Judges are subject to a Napoleonic code of justice, meaning laws are strictly codified, leaving them little room for judgment.