Trumps answer was weak. He should’ve turned the table on her. “Where and who said this”? “Incidents”?! “Can you name your source for these ‘incidents’”? Then he could spell out his actual immigration philosophy. That or refuse to be interviewed by commies in the future. It never bodes well for any “R’s”. No matter how un R they are.
That happens when you work without notes and "off the cuff". Your answers are much more straightforward and truthful, but when you are ambushed, you come of with a weak response.