Why wouldn't it be plausible that Trump and the FAA were inclined to do whatever Boeing wanted, but eventually every other country grounding the planes made that position untenable so Trump was forced to change his mind?
To me, this is the most likely scenario. Boeing assures Trump the planes are safe and they'll take care of it, time passes and the US stands alone, people freak, Trump realizes this and then steps in front of the cameras to look like the "protector".
What's silly to me is how Boeing doesn't realize that another crash IN THE US would be disastrous, much, much worse than the position they find themselves in now.
It's possible that US maintenance procedures and pilot training make it very unlikely that a crash would happen here, even though depending on perfect maintenance and defensive piloting shouldn't be necessary for an airworthy plane.
