Max fine was increased by Congress to $37,000 per incident, they have the full weight of congressional law behind them only the Supreme Court could strike down the fines.
https://www.faa.gov/data_research/passengers_cargo/unruly_passengers/
“The repercussions for passengers who engage in unruly behavior can be substantial. They can be fined by the FAA or prosecuted on criminal charges.
As part of the FAA’s Reauthorization Bill (PDF) FAA can propose up to $37,000 per violation for unruly passenger cases. Previously, the maximum civil penalty per violation was $25,000. One incident can result in multiple violations.
Page last modified: July 09, 2021 9:12:35 AM EDT”
Oh good, then they’ll be fining John Kerry?
Oh, different laws for different classes, I forgot.