Inspector General Horowitz is doing a FISA review based on the Carter Page application. However, if Michael Horowitz has started looking deeply into the DOJ National Security Division (DOJ-NSD), via their historic use of FARA definitions to submit Title-1 surveillance warrants against U.S. persons…. well, there’s a strong possibility such an IG investigation would take much longer than expected.
Additionally, if the Obama DOJ-NSD was using the appearance of FARA violations as the predicate for FISA warrant authority (now seems likely); and that sketchy predicate was the basis for keeping all OIG oversight away from the NSD (again, likely); then the entire political system in/around Washington DC would be opened as a target for surveillance.
Anyone targeted under such a sketchy legal predicate for lobbying violations, would unknowingly be carrying their Title-1 surveillance virus into every interaction.  The downstream ramifications are almost beyond imagining….