Alan Dershowitz Alan Morton DershowitzDershowitz suing CNN for 0 million in defamation suit Bannon and Maxwell cases display DOJ press strategy chutzpah Ghislaine Maxwell attorneys ask for delay to unseal court documents due to 'critical new information' MORE, a member of President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE's legal team for his impeachment trial, on Sunday fielded questions about whether his defense of the president is at odds with his position during the impeachment trial of former President Clinton.

Fox News's Chris Wallace Christopher (Chris) WallaceThe Memo: Media accused of using kid-gloves on Biden Biden town hall draws 3.3 million viewers for CNN Gates says travel ban made COVID-19 worse in US MORE asked Dershowitz, who has frequently argued that Trump cannot be removed because he did not commit a crime, about his comments in 1998 that impeachment does not require a crime be committed.

"It certainly doesn't have to be a crime. If you have somebody who completely corrupts the office of president and who abuses trust and who poses great danger to our liberty, you don't need a technical crime," Dershowitz told Larry King in the 1998 clip played by Wallace on "Fox News Sunday."

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Dershowitz argued his legal understanding of impeachment had evolved since 1998, telling Wallace, "I've been immersing myself in dusty old books, and I’ve concluded that, no, it has to be a crime."

Wallace countered that Dershowitz has frequently defended Trump by invoking an argument written by former Supreme Court Justice Benjamin Curtis in defense of former President Andrew Johnson that evidence of criminal conduct is necessary to impeach and remove a president.

"I find it very hard to believe you hadn't studied the only other impeachment in history" during the Clinton impeachment, Wallace said.

Dershowitz responded that he had invoked Curtis’s argument long before he took his role in Trump's defense.

On FOX News Sunday: Alan Dershowitz addresses his view that impeachment is only constitutional when the offense is criminal. #FNS #FoxNews pic.twitter.com/3vlPn5fojy — FoxNewsSunday (@FoxNewsSunday) January 26, 2020

Wallace also asked Dershowitz about a recently released recording by Rudy Giuliani Rudy GiulianiGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Juan Williams: Breaking down the debates Giuliani criticizes NYC leadership: 'They're killing this city' MORE associate Lev Parnas in which Trump, who has claimed not to know Parnas, tells Parnas to "take her out" in reference to former U.S. Ambassador to Ukraine Marie Yovanovitch Marie YovanovitchGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Strzok: Trump behaving like an authoritarian Powell backs Biden at convention as Democrats rip Trump on security MORE.

Dershowitz responded that the tape does not contain any impeachable offenses because the president has the power to fire ambassadors, but Wallace noted Trump’s repeated denials of knowing Parnas in the first place.

“I only want to speak to what’s an impeachable offense,” Dershowitz responded, saying that whether the conversation is otherwise “damaging” is “exactly what voters ought to be deciding on.”