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Countries such as Panama, Colombia, and Brazil illustrate regions where borders are remarkably fluid. In these areas, the infrastructure and enforcement mechanisms are often insufficient to curb illegal crossings. Travelers and locals alike experience firsthand what it is like to navigate zones where the rule of law is inconsistently applied, and enforcement agencies often lack jurisdiction over the influx of individuals moving freely across borders. These regions demonstrate the complexities and challenges that come with managing borders in areas where policies are often navigated informally.