ABC News has demoted its embattled chief investigative correspondent, Brian Ross, after he botched an “exclusive” report on Donald Trump and Russia. News President James Goldston announced to staffers on Friday that Ross would be reassigned to ABC News’ outside production house, Lincoln Square Productions. Ross, who had been scheduled to return from a four-week, unpaid suspension on Thursday, will not be resuming his former, longtime role. He is believed to be retaining his title of “chief investigative correspondent” though he is not expected to be seen on ABC with live reports, so it’s unclear how he will perform those...