Rep. Nancy Mace, R-S.C., said she wants to see "heads roll" after several installments of the Twitter Files revealed a pattern of censorship, blacklisting, and the FBI's direct role in flagging users and tweets to Twitter executives.

"I really want to know what government agents and agencies were censoring the free speech of Americans," Mace said on "Sunday Night In America." 

The congresswoman, a member of the House Judiciary Committee, highlighted the "disconcerting" communication between former Twitter Trust and Safety Chief Yoel Roth and FBI officials. 

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The sixth installment of the Twitter Files revealed an email from FBI agent Elvis Chan to "Twitter folks," linking a list of accounts that may "potentially constitute violations of Twitter's Terms of Service."

"I don’t know why so many on the left are so concerned about ideas they disagree with being on the internet. The only thing I can come up with is that they can’t persuade people or voters, more importantly, unless they’re suppressing the ideas of others that they disagree with," Mace said. 

She continued, "And when you’re suppressing free speech when you are an agent of the federal government suppressing that speech, it’s wrong, and I want to see heads roll, and people fired for what they have done." 

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Host Trey Gowdy asked about senior House GOP leadership vowing to subpoena the FBI and Department of Justice in a potential Twitter probe and whether any Democratic colleagues have expressed interest in a bipartisan investigation. 

"It's only Republicans at this juncture," the South Carolina lawmaker responded, before praising Rep. Ro Khanna, D-Calif., for "sounding the alarm bell on [the] censoring of free speech." 

"I wish everyone felt the same way regardless of who is in power." 

Mace continued adding House Republicans like Reps. Jim Jordan, R-Ohio, and James Comer, R-Ky., have begun issuing letters to executives and leaders of government agencies. 

"[We] will get to the bottom of it. There will be subpoenas flying. There will be investigations going on throughout many different committees," she said. 

Substack writer Matt Taibbi added a "supplemental" thread on Sunday to his latest "Twitter Files" drop on FBI connections with the social media site.

After revealing on Friday that members of Twitter had near constant communication with FBI agents from 2020 to 2022, Taibbi detailed an additional conflict between the federal agency and the social media company when the FBI appeared displeased with Twitter’s responses.

"In July of 2020, San Francisco FBI agent Elvis Chan tells Twitter executive Yoel Roth to expect written questions from the Foreign Influence Task Force (FITF), the inter-agency group that deals with cyber threats," Taibbi tweeted.

He continued, "The questionnaire authors seem displeased with Twitter for implying, in a July 20th ‘DHS/ODNI/FBI/Industry briefing,’ that ‘you indicated you had not observed much recent activity from official propaganda actors on your platform.’"

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Although Taibbi noted that "one would think" that report from Twitter would be "good news," FBI agents appeared to "feel otherwise." He emphasized that Chan remarked that discussions within the United States Intelligence Community pushed for "clarifications" withing Twitter on its propaganda monitoring, often using mainstream media articles as sources.

"The task force demanded to know how Twitter came to its unpopular conclusion. Oddly, it included a bibliography of public sources - including a Wall Street Journal article - attesting to the prevalence of foreign threats, as if to show Twitter they got it wrong," Taibbi explained. "Roth, receiving the questions, circulated them with other company executives, and complained that he was ‘frankly perplexed by the requests here, which seem more like something we'd get from a congressional committee than the Bureau.’"

Taibbi revealed that Roth was not "comfortable with the Bureau (and by extension the IC) demanding written answers" and sent out an internal note adding that he believed the FBI’s questions on the subject were "flawed."

In an expanded article on the subject, Taibbi wrote that the questions included, "In what ways and by what measures do you see official propaganda actors as less active than other groups on your platform?"; "What groups are you comparing to official propaganda actors?" and "What quantitative metrics do you use to judge volume of activity on your platform? On what scale? Can you provide these metrics?"

Despite not agreeing with the line of questioning, Roth suggested afterwards that they "get on the phone with Elvis ASAP and try to straighten this out" to disabuse the agencies of any notion that state propaganda is not a "‘thing’ on Twitter."

The most recent "Twitter Files" revealed that as many as 80 FBI agents were assigned to monitor foreign interference on social media following the 2016 presidential election. Taibbi’s new thread also responded to the FBI’s comments on the revelations from Friday.

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"The FBI responded to Friday’s report by saying it ‘regularly engages with private sector entities to provide information specific to identified foreign malign influence actors’ subversive, undeclared, covert, or criminal activities,’" Taibbi wrote. "That may be true, but we haven’t seen that in the documents to date. Instead, we’ve mostly seen requests for moderation involving low-follower accounts belonging to ordinary Americans – and Billy Baldwin."

Taibbi particularly highlighted the FBI’s reliance on mainstream media sources over Twitter’s own resources to target "foreign influence" on social media.

"If one didn’t know any better, one would conclude from this passage that the foreign-influence assertion at least in this case was being daisy-chained into existence: public sources cite anonymous official sources, then official sources cite the public sources in their communications with platforms like Twitter. An information loop, pooh-poohing any implication that foreign influence is not a threat, or at least a recent threat," Taibbi wrote in a subsequent Substack post about the Twitter thread.

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The Substack writer concluded his Twitter thread promoting more Twitter Files drops from him, Bari Weiss and Michael Shellenberger in the near future.