TBF, Trump isn't responsible for the longterm cuts to the FAA and regulation-dodging by the corporates.
That's an ongoing neo-liberal (in the US sense, ie laissez-faire ) project, implemented very effectively by the Republicans.
Horrid shades of the Grenfell cladding manufacturer here:
Essentially, Boeing decided that the Max 8 did not need recertification and this decision was not challenged by the FAA. Moreover, Boeing undertook much of the safety work itself without any independent review, although as yet the outside world does not know to what degree. What we do know is that 1,000 Boeing employees are seconded to the FAA. Boeing then decided to market the Max 8 as part of the 737 family rather than as a plane with wholly different flight characteristics and a new automated software system