You may be right, but I don’t agree.
Trump seized the Cruz controversy to take control of the narrative and drive media coverage.
Personally, I think he should continue to focus on the border, jobs and safety.
He’s abandoned what brought him to the dance.
He talks about the border all the time - he’s hardly abandoned it.
Posters complain when he says the same thing at rallies (how would anyone have time for a new speech with each one anyway) and then complain when he adds something new.