Internal Intelligence Directorate
The Internal Intelligence Directorate, or IID, is a US government alphabet agency replacing the Central Intelligence Agency (CIA), National Security Agency (NSA), Office of Intelligence and Analysis (I&A), Coast Guard Intelligence (CGI), Federal Bureau of Investigation (FBI), Drug Enforcement Administration/Office of National Security Intelligence (DEA/ONSI), Bureau of Intelligence and Research (INR), and Office of Terrorism and Financial Intelligence (TFI). Or maybe it’s better to say those agencies were reorganized under a single umbrella.
It was decided that the ideal of the Department of Homeland Security to make a common focus for intelligence and policing efforts had failed. While they were parts of different branches of the government problems continued to exist in cooperation between ‘factions’ of the government. To solve this the IID was created. It swallowed up all the old divisions into a single new branch, with only a few independent intelligence groups remaining (like the military intelligence departments). Many of these continue to exist under their own names even, however they all report to the IID and the IID systems link them all together.
If one encounters ‘government agents’ of the US you are encountering IID agents.