The FAA are the ones responsible for stopping shit like the 737Max fiasco. Yes, Boeing did it, and many people there deserve to go to prison, but the FAA is supposed to be the guardrail ensuring they can't get away with it in the first place. It was an objective failure, and it has eroded the trust in them - point in case, most other aviation regulators did their own checks on the 737 Max before allowing it back to service, which usually doesn't happen ( EASA trusts FAA's ratings and vice versa).