FBI chief says Chinese hackers have infiltrated critical US infrastructure

I don't understand. The Chinese are supposed to have infiltrated US infrastructure but no-one can do anything about it? This sounds like pure propaganda.

Here is an joint CSA about Volt Typhoon.[1]<p>1. PDF <a href="https:&#x2F;&#x2F;media.defense.gov&#x2F;2023&#x2F;May&#x2F;24&#x2F;2003229517&#x2F;-1&#x2F;-1&#x2F;0&#x2F;CSA_Living_off_the_Land.PDF" rel="nofollow">https:&#x2F;&#x2F;media.defense.gov&#x2F;2023&#x2F;May&#x2F;24&#x2F;2003229517&#x2F;-1&#x2F;-1&#x2F;0&#x2F;CSA...</a>

And vice versa!?