Both parties (Trump & Cruz) need to move.
If it’s only Cruz that humbles himself and extends the olive branch, the effort will fail to unite the Republican party.
Trump needs to humbly confess the wrongs of his public hate for Senator Cruz (and others).
Trump needs to have some real change in his character in order to be our President. Humbly embracing Senator Cruz with a repentant heart is a good start.
If both Cruz and Trump agree to meet in the middle, your letter is worthwhile.
Yes, you are right, they would both have to come together. I believe if Cruz made the move and sought to bury the hatchet and unite...that Trump would respond very positively to it.