There might be a mix up on the details.
The FBI raided the home of John Bolton who was a former National Security Advisor for the first Trump administration. (not directly part of the NSA and definitely not the director of the NSA). Bolton has become a vocal critic of Trump since he was fired in Sept 2019.
Trump's DOJ has a track record of prosecuting Trump's vocal critics. eg. Former FBI director James Comey and New York attorney general Letitia James
https://en.wikipedia.org/wiki/Prosecution_of_John_Bolton
There has been no legal action taken against current NSA director General Joshua M. Rudd or his recent predecessor, William J. Hartman
> Trump's DOJ has a track record of prosecuting Trump's vocal critics.
And many Americans claim they have freedom of speech!
(Of course the little guys speech is "free", they aren't important. But the moment the little guy critical of Trump is in a position of power or influence, watch how quickly he is silenced.)