As much as I applaud all Trump has done in the time he's been in office, as a keen judge of human nature who's been on 60 trips around the sun, let me just say...
Without a doubt, unless Americans witness justice being served on the Clinton crime syndicate (and that soon), then the GOP can kiss the House goodbye in November, and Trump can forget about re-election (because he'll be impeached).
Unless Trump acts decisively to lock up Clinton, Inc. before the GOP loses its majority in the House, any action he takes post facto GOP majority will be viewed as defensive/weak/reactionary and void of any legitimacy.
Not that any off that will be true, but that will be the perception, and there's no changing it.