His answer is “I’ve been the best president for Black people since Lincoln.”
As I said, it’s not a good answer, but it is an answer. And he only said that bit after the journalist did press him by asking the question again, interrupting his rant in fact.
I am just not sure what you are on about with integrity. They did press him, and he did answer. She then even followed up that question by challenging Trump’s answer.
But at a certain point, the answer is the answer. The journalist did her job and it’s up to the viewers/readers to determine if they like or agree with that answer.