President Donald Trump's remark to Terry Moran in an ABC News interview — that it was his choice to whom he would grant an interview — exposes a delicate question for journalists.

Midway through Donald Trump’s 100-day interview with ABC’s Terry Moran, the president got flustered. “Terry, they’re giving you the big break of a lifetime. You know, you are doing the interview.

Instead of "Who's on First," it was "Who's in MS-13" Tuesday night on ABC News, where Donald Trump - in a fiery interview with Terry Moran - knuckled down on his insistence that deported immigrant Kilmar Abrego Garcia had the notorious El Salvadorian gang's name tattooed on his fist.