DAVID FRUM: The worst mistake CNN has made has been the result of the determination to bring in-house Trump associates in order to promote Trump falsehoods. Not from Trump HQ or not from the White House, but with CNN's own brand on them.

BRIAN STELTER (HOST): We'll have to disagree on that one. I think we need to hear from Trump supporters, but I --

FRUM: You need to hear them, but you need to hear from them as Trump supporters. You don't need to put your own brand on them. And that has been the worst mistake, but that comes from the desire to be unduly fair.

Previously:

CNN's “both sides” problem infects coverage of Trump's anti-Muslim retweets

One of CNN's Trump shills endorses Muslim ban, “no-go zone” myth while defending Trump's racist tweets

CNN pro-Trump contributor criticizes civil rights icon John Lewis for not educating Trump about civil rights