On today’s edition of “Fox News Sunday,” Chris Wallace grilled Robby Mook, Hillary Clinton’s campaign manager, about Hillary’s flat out lie that FBI Director James Comey sent his letter to Congress announcing that the FBI has learned of the existence of emails that appear to be pertinent to the investigation into Hillary Clinton’s use of a private email server when she was secretary of state only to Republicans.

The look on Mook’s face when Wallace asks him why Hillary would say something that is so flatly untrue, makes it clear Mook wasn’t expecting the question, or maybe it just the way it was phrased. You can watch Wallace grill Mook in the following video clip:

Transcript of the video via “Fox News Sunday”:

WALLACE:  Robby, I want to move on and ask you about Secretary Clinton’s reaction.  Here’s part of what she said on Friday night.

(BEGIN VIDEO CLIP)

CLINTON:  If they’re going to be sending this kind of letter that is only going originally to Republican members of the House, that they need to share whatever facts they claim to have with the American people.

(END VIDEO CLIP)

WALLACE:  Robby, why would she say something that is so flatly untrue?  I have a copy here — it’s not very long.  It’s the letter that Comey sent to Congress.  On the front page, it’s got the eight Republican chairmen of the committees.  If you turn it over, next, you’ve got the eight top Democrats on the committee.

Why would she say it was just sent to the Republicans when, in fact, it was sent to the Republicans and Democrats?

MOOK:  You know, Chris, this has been really overhyped.

WALLACE:  Well, she said it, I didn’t.

MOOK:  We were all surprised by this letter.  She looked at the front page, and as you just said yourself, on the front page of that memo, it lists those Republican chairs.  Were the Democrats CC’ed at the end?  Absolutely.

She looked at the front page.  She acknowledged, we all acknowledge this was sent to everybody.  What we’re concerned and disturbed by is that Director Comey sent a letter saying we have some information, I don’t know if it’s significant, I don’t know if it isn’t, he didn’t say where it came from —

WALLACE:  But, Robby —

MOOK:  — he didn’t say what it was about.  He didn’t even say whether these e-mails were sent or received by Hillary Clinton.  And furthermore, another hypothetical that’s out there is that these are duplicates that have already been released.  We need all the information, and Director Comey needs to get it out fast.

WALLACE:  But, Robby, I want to make one more point about this letter.  You say it’s hype.  Comey sent the letter about 1:00 p.m. Eastern Time on Friday.  Your campaign chairman, John Podesta, put out a statement at 3:45 p.m. in which he made exactly the same charge that this letter had been sent just to the Republicans, not to the Democrats.  Three hour and 15 minutes later, Hillary Clinton makes the same charge.

This was a talking point of your campaign and frankly was a dishonest talking point.

MOOK:  Chris, if your question is whether Democratic leaders were CC’ed on that letter, the answer is absolutely yes.

Mook went on to complain more about Comey’s letter.

As to Mook’s assertion that the new emails are “duplicates that have already been released,” Fox News reports that a senior law enforcement official told Fox News that it’s highly unlikely that all of the newfound emails are duplicates.