Fox News host Tucker Carlson Tucker CarlsonJudge tosses Karen McDougal's defamation suit against Tucker Carlson OVERNIGHT ENERGY: House passes sweeping clean energy bill | Pebble Mine CEO resigns over secretly recorded comments about government officials | Corporations roll out climate goals amid growing pressure to deliver Former Florida attorney general calls Kyle Rittenhouse 'a little boy out there trying to protect his community' MORE mocked anchor Shepard Smith on Wednesday night after his colleague offered an impassioned defense of the network's legal analyst over his assessment that President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE committed a crime in his interactions with the leader of Ukraine.

The back-and-forth came after Joseph diGenova, a former federal prosecutor, said on "Tucker Carlson Tonight" one night earlier that Fox News legal analyst Andrew Napolitano Andrew Peter NapolitanoFox's Napolitano says grand jury erred in Taylor case: 'I would have indicted all three of them' Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Fox's Napolitano: 2000 election will look like 'child's play' compared to 2020 legal battles MORE was a "fool" for saying Trump committed a crime.

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Smith took major issue with the statement, saying on his Fox News program Wednesday afternoon that "attacking our colleague, who’s here to offer legal assessments on our air, in our work home, is repugnant." Smith also appeared to call out Carlson over the comment going unchallenged.

Carlson later Wednesday devoted an entire segment to the episode on his show, showcasing clips of the comments while appearing alongside diGenova.

After airing Smith's statements, Carlson mockingly quipped, "Repugnant."

"Not clear if that was you or me but someone was repugnant," he said, adding that Smith "ironically" called diGenova "partisan."

He then argued that "unlike some daytime hosts, I'm not very partisan," before asking diGenova whether Trump indeed committed a crime by soliciting help from Ukraine to investigate 2020 presidential candidate Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE and his son Hunter Biden over allegations of corruption.

"Absolutely not," diGenova said, dismissing many of the arguments Napolitano made. He also questioned Napolitano's credentials to make such a claim, asserting that the former New Jersey superior court judge has never been a U.S. attorney or conducted a federal grand jury.

"I have done all of those things. If he wants to have an opinion, that's fine," diGenova said.

DiGenova later asserted that he was "very truthful" while making an assessment of Napolitano's legal argument about Trump.

Carlson then argued that "it doesn’t seem honest to me when a host, any host on any channel, including this one, pretends that the answer is obvious."

“That there is ironclad consensus about what the answer is when there, in fact, isn’t, when it’s a subjective question. That’s not news, is it? That’s opinion," he said.

A whistleblower complaint regarding Trump's interactions with Ukrainian President Volodymyr Zelensky has ensnared the president's administration in controversy this week. The complaint, which was released on Thursday, accuses Trump of a broad effort to pressure Ukraine to investigate the Bidens over allegations of corruption.

A White House memo of the leaders' July 25 phone call shows that Trump asked Zelensky to work with his personal attorney Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE and Attorney General William Barr Bill BarrFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Why a backdoor to encrypted data is detrimental to cybersecurity and data integrity FBI official who worked with Mueller raised doubts about Russia investigation MORE to investigate a political opponent.

Before the memo's release, Napolitano had said that Trump had already confessed to impropriety by acknowledging that he'd asked the Ukrainian leader to look into Biden.

"It is a crime for the president to solicit aid for his campaign from a foreign government," he said.

Napolitano also said earlier in the week that the charges against Trump were more serious than what former special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE found in his investigation into Russian interference and alleged obstruction of justice.