[wahern]

Maybe not agencies as you mean, but it does have:

* Marine Corps Counterintelligence: https://en.wikipedia.org/wiki/Marine_Corps_Intelligence#Mari...

* United States Army Counterintelligence: https://en.wikipedia.org/wiki/United_States_Army_Counterinte...

* Defense Counterintelligence and Security Agency: https://en.wikipedia.org/wiki/Defense_Counterintelligence_an...

* National Counterintelligence and Security Center: https://en.wikipedia.org/wiki/National_Counterintelligence_a...

Found via https://en.wikipedia.org/wiki/List_of_counterintelligence_or...

AFAICT the NCSC is independent from the CIA, though both do fall under the DNI. And the DCSA does have "agency" in its name. ;)

The hierarchy became more complex and confusing after the 9/11 reorganization, and apparently has continued to do so.

[dragonwriter]

You left out the FBI, which doesn't have “counterintelligence” in the name but is nevertheless the primary civilian counterintelligence agency.

[wahern]

Without knowing more, I would think most counterintelligence work is still done by the FBI, CIA, NSA, and maybe DIA. But I was replying to the specific claim that there were no "designated ... agencies", where I interpreted designated to mean specialized. The FBI, CIA, and NSA are monolithic organizations.