Thank you for that question. I think that's essentially the key issue. You caught it. The embassies abroad are the front lines of the immigration battle or challenge, so to speak.
Some of the things we worked with may be a little outdated, since I have been out of the service for a while. But some of the stuff we did abroad, particularly when we were dealing with these narco-trafficking groups, was to work with the local law enforcement. That requires a level of cooperation that also is provided by the host country. Things like status of forces agreements and standard protocols host nation to host nation open a tremendous amount of doors for individuals in the intelligence profession to create mutual shared capabilities with the local law enforcement.
When I say “local law enforcement”, I'm not just talking about the national law enforcement; I'm talking about the municipal level—the very local level of where some of these networks operate. In the case of some of the work we did in Mexico, it was not working in the capital, which is the Distrito Federal in Mexico City; it was working with some of the local law enforcement along the northern border.
Had we not had this type of status of forces agreement with Mexico, that would not have been possible. The Mexican government allowed us to go to the north to work with these local law enforcement officers, which tremendously enhanced our capability to source individuals who could be potential personalities of interest.