If I’m reading this right, depending on the severity of the offense, what he alleges has a maximum sentence of up to life in prison, or a fine up to $1M, per offense. [1]
1. https://www.law.cornell.edu/uscode/text/18/38#:~:text=Go!-,1....
1. https://www.law.cornell.edu/uscode/text/18/38#:~:text=Go!-,1....
Well, if the guy was murdered, and if the murder was related to the case it doesn't sound like they were merely laughing.