You’d have to be living under a rock to not know what Fusion GPS is. But, if you’re Robert Mueller, who ran a two-year $25 million investigation into Russian collusion, apparently you have no idea.

Rep. Steve Chabot (R-OH): “When you talk about the firm that produced the Steele [dossier], the name of the firm that produced that was Fusion GPS. Is that correct?” Robert Mueller: “I’m not familiar … with that” Chabot: “It’s not a trick question. It was Fusion GPS” pic.twitter.com/4WA0lhKc3x — Ryan Saavedra (@RealSaavedra) July 24, 2019

“When you talk about the firm that produced the Steele reporting, the name of the firm that produced that was Fusion GPS, is that correct?” asked Congressman Chabot.

“I’m not familiar with that,” Mueller replied.

Excuse me? How does Robert Mueller not know what Fusion GPS is? This absurd statement was predictably mocked on Twitter.

How does Mueller not recall Fusion GPS? Has he never read or watched ANYTHING on Russian collusion?? — Matt Schlapp (@mschlapp) July 24, 2019

Robert Mueller literally just said he wasn't familiar with Fusion GPS. My Lord. My Lord. — Mollie (@MZHemingway) July 24, 2019

Not what I'm watching…Mueller looks like a bumbling idiot who didnt even know who Fusion GPS or Glenn Simpson was….How could he not know who created the FAKE dossier? — All American Dad (@allamericancoll) July 24, 2019

Did Mueller just say he’s “not familiar” with Fusion GPS? — Guy Benson (@guypbenson) July 24, 2019

Wait, what? Mueller was confused about who and what Fusion GPS is and does? This is a total, complete, apocalyptic disaster for the conspiracy-theory Democrats. This is imploding on them. Hilarious. #MuellerHearings — Dan Bongino (@dbongino) July 24, 2019

How can Fusion Gps and Steele dossier be outside of Mueller’s “purview” entirely? They provided many of the allegations he spent all that time investigating. He could totally answer those questions that go to his report. #MuellerHearing — Kimberley Strassel (@KimStrassel) July 24, 2019

A treasonous Sham is being perpetrated against our @POTUS @realDonaldTrump – How can Mueller not take into account FUSION GPS -how can the absolute foundation of this atrocity not have been investigated by Mueller – this was set up from the start as a false OBSTRUCTION charge — Robert Davi (@RobertJohnDavi) July 24, 2019

Mueller says he is not "not familiar" with Fusion GPS, and it's outside his purview. That's such a joke. The activities of Fusion GPS in relation to the 2016 election were squarely within his purview, and he knows it. Transparent obfuscation — Michael Tracey (@mtracey) July 24, 2019

Robert Mueller is not familiar with Fusion GPS!?! Has he been living under a rock? Fusion GPS produced the defamatory dossier paid for by Clinton & used to spy on the @realDonaldTrump campaign! — Kayleigh McEnany (@kayleighmcenany) July 24, 2019

And finally, from the President himself.