Donald Trump gave a strong, unqualified endorsement of John McCain, in sufficient time for the Arizona GOP Senate primary. This is politics; I can't think of a better way to say "I'm sorry!" than such a gesture.
I can. It would have been to say "I'm sorry" specifically for denigrating McCain's POW history. That's how adults behave, you see.
You may think that doing so would be "damaging" to Trump's campaign, which says far more about you than anybody else.
I view damaging Trump's election chances by caving to the Jeff Flakes of the world a form of using an unimportant issue to give Trump a disadvantage in the election over Hillary Clinton, whose disadvantages stem from important and substantive issues.
Why should Trump cave here? If he caves to Flakey Jeffy on this issue, why wouldn't someone like myself, who's in agreement with Trump far more than the rest of the GOP on issues, think that Trump won't cave on key platform issues if he gives in on something so unsubstantive. Was it a thoughtless comment? Yes, but it was aimed at a war hero who ditched a faithful wife who waited for him for a younger, prettier, and richer woman. (And I voted for McCain in 2008.) If I were Trump's advisor, I'd tell him to stand his ground here.
Thank God you aren't Trump's advisor, though it's sickening to think people like you exist.