The US government has no such exemption. They can't put an agent into a domestic company unless there's some evidence the company is deliberately breaking the law.
Thats why a I mentioned statutory if for example the FBI had suspicions that the KGB/SVR or another state had agents within a company they would take action and they have caught a number of spies doing this.
The KGB back in the day had an entire department Line X that was dedicated to industrial espionage - Putin apparently was in this Department
