Which organization tends to have a complex structure making it difficult to track during an investigation?

The Mexican cartels are known for their sophisticated and complex organizational structures, which significantly complicate investigative efforts. These cartels often operate under hierarchical frameworks with multiple layers of command, making it challenging for law enforcement to identify key players and disrupt their activities. They engage in various illicit enterprises beyond human trafficking, such as drug trafficking, weapon smuggling, and money laundering, which further obscures their operations.

Additionally, these organizations may have widespread connections and influence across borders, utilizing corruption and intimidation to maintain control and evade law enforcement. Their ability to adapt to changing circumstances and utilize technology and violent tactics adds to the difficulty of tracking them during investigations. In contrast, while other options present their own challenges, they typically do not exhibit the same level of complexity in structure and operations as the Mexican cartels.