While it is true that Trump was not exonerated of all wrong-doing, it is also true that JFK was never exonerated of buying the election by bribing Chicago voters.
Trump is presumed innocent until proven guilty. He wasn't proven guilty, which is not the same thing as being exonerated. But, some people will always need to lie to themselves to believe Trump stole the election rather than democrats merely being incredibly stupid. And that cost them an election they should have won. Hillary was the biggest reason they lost, thankfully. Visiting flyover country is beneath her, so she stayed in her cozy DC bacta tank to heal up from her cyborg neurological malfunctions, instead of sucking it up and condescend to the low people of rust belt states, which she was supposed to win.
Anyway, the list of people investigated but never charged is long and distinguished. And sometimes they were guilty as sin, like Hillary and her obstruction of justice when she wiped those servers clean, and destroyed evidence against her. But Hillary fans, all 9 of them, are certain that she was exonerated during Comey's passive/agressive press conference.