I think it is possible for people to change opinions but not who they are.
Trump has always been a shallow, woman chasing, money grubbing guy ... the worst kind of businessman. Filing bankruptcies, throwing people out of work.
He cannot change his character.
There would be no way for anyone to accept redemption from God if character could not be changed and that ability is offered us through the sacrifice of Christ. How sad if you really believe what you say.