Re: Minor edit...
Actually I don't believe it was pressure from other aviation authorities which led to the FAA grounding the deadly plane.
By the American safety model - 'it has to be proven unsafe to be grounded' rather than the 'it has to be proven safe to fly' precautionary model adopted elsewhere - the FAA would probably have had their arses sued off them for billions by Boeing if they had dared to ground it.
It was only Trump coming out and saying the plane must be grounded which gave the FAA an excuse to do that knowing Boeing wouldn't dare go against Trump
So, ironically, we can thank Trump for doing a good thing, by doing a bad thing, in telling the FAA to break the rules they were meant to comply with.
It's a funny old world.