It's clear that he'll never enjoy the "full confidence" of the American people.  After all, he lost the popular vote by a huge margin - of course his ego has him claiming that he would have won it by a yuuge margin if it hadn't been for the millions of people that voted illegally (and, even with zero supporting information Fox and the rest of his supporters swallowed that without questioning it).

And of course he wouldn't admit that Russian hacking had anything to do with the outcome of the election - again his ego won't let him accept that.

If we add in the actions of the FBI (Comey) immediately before the election it's pretty clear that his win, while legal, was hardly legitimate [he won three states by less than 1% and another by less than 2%]