He says he was duped, and he promptly apologized. If it was not enough for you, then so be it. BTW, Trump praised him for it on Bill O’Reilly’s show.
It’s not enough for me. If you think someone said something you don’t go and falsify a statement in their name. Whatever Trump was thinking I don’t know but if someone made a false Tweet using my Twitter account I certainly would recognize it for what it was, a self serving lie.