"Joseph Kennedy Was Angry At Mort Sahl and The Government Shut Down the hungry i" -Enrico Banducci

https://youtu.be/tN3s6zYJmDo -- video of Mort's Press Conference about this claim.
FBI was afraid to go after him in fear he'd ridicule them even harder. Do you think the FBI fears Stephen Colbert or any other comedian? Or any other "artist" if they still exist, the ones under 70 years of age.

https://reason.com/2022/06/30/the-fbi-kept-tabs-on-mort-sahls-jokes-about-it-and-hoover-thought-sahl-was-a-sick-man/

Mort's FBI file - https://vault.fbi.gov/morton-sahl/morton-sahl-part-01-of-01