That option that the US president has to remove the Fed chair is limited, which means that a man like Trump – if there was much for him to do in his power – could have replaced Jerome Powell long ago instead of badmouthing him long ago, as that one is not on the same economic path. By law, Trump can only take action against him if he has done anything based on his own personal interest or is not effective on duty.
Wrong, another post by someone who does not live in the US or understand its law. Trump can remove Powell by tomorrow. This would cause a short term negative market reaction, which he does not want. That is the only reason why he does not do it. It has nothing to do with his ability to do it, he has the power to do it.
I don't need to live in the US to read about US law, and I also don't need to be a US citizen before I can read about "Humphrey's Executor v. United States (1935): Presidential Power and Independent Agencies", which was a clear case where supreme courts cleared the air of presidential power over independent agencies like the FED. Or has such a law been revoked in the US that I'm not aware of?