Andrew Napolitano, a conservative media personality and former New Jersey Superior Court judge, said he believed Trump could face federal indictment.
Legal scholars are divided on whether the president can issue a pardon to himself on his way out of office.
Napolitano's called the allegations an "extortionate scheme" made of "baseless accusations" from a "felon with a criminal record that spans three decades."
Andrew Napolitano wrote that he sees himself a "loyal" friend but is "foremost" loyal to the truth.
"The president has taken an oath to preserve, protect and defend the Constitution," former judge Andrew Napolitano wrote. "Instead, he has trashed it."
"Those offering to tell the truth should be welcomed, not pilloried," Andrew Napolitano wrote.
Judge Andrew Napolitano denounced the GOP's newly formed criticism of former National Security Advisor John Bolton during a Tuesday appearance on Fox Business channel, while suggesting that Bolton was likely to be called to testify in the Senate trial of President Donald Trump.
Dershowitz argued that even if Trump did what people accuse him of doing, it didn't rise to the level of an impeachable offense.
"The evidence is ample and uncontradicted" for removing the president from office, Andrew Napolitano argued.
Andrew Napolitano noted that the decision also went counter to executive orders from two previous Republican presidents.
Andrew Napolitano cited "new emails of people getting instructions directly from the president to hold up on the sending of the [military] funds [to Ukraine]."
Andrew Napolitano, a former judge, also predicted President Donald Trump would "give up building the [Mexican border] wall because the land on which he wants to build is owned by Republicans who won't sell to the government."
Fox News legal analyst Andrew Napolitano said the evidence that President Donald Trump "abused his power" was "undisputed," leaving impeachment as the "proper constitutional remedy."
Judge Andrew Napolitano said there were flaws in Jonathan Turley's argument against impeaching President Trump during Fox News' coverage of the House Judiciary Committee's ongoing impeachment proceedings.
Fox News senior legal analyst Judge Andrew Napolitano has claimed that evidence presented by Democrats at the impeachment inquiry is "overwhelming."
"Was there a 'quid pro quo?' The answer is yes," Sondland said Wednesday. He also testified that "we followed the president's orders."
Given the additional charges she faces, Napolitano added that it was likely too late for Loughlin to take a plea deal in line with the initial offer.
Judge Andrew Napolitano, the senior judicial analyst for Fox News, has declared that President Trump's quid pro quo deal with the Ukraine is impeachable on "Your World With Cavuto" this Tuesday.
"It's the selective release, that the courts will say, 'is he really serious about executive privilege?'" Andrew Napolitano pointed out.
"Three years ago, they were shouting about law and order over Hillary Clinton's emails," Andrew Napolitano wrote. "Today, they are shouting to let Trump be Trump."
"The chances of Ms. Pelosi becoming president, even in Donald Trump were impeached … are so remote it's not worth discussing," Andrew Napolitano said on Fox & Friends.
A New York federal appeals court ruled on Monday that Trump's tax returns can be turned over to criminal investigators in the state. The president's lawyers are expected to appeal the decision.
"One can see that the reason Republicans have been attacking the process of impeachment is largely because there is no credible defense to the proof of impeachment," Andrew Napolitano said.
Andrew Napolitano said the impeachment process against Donald Trump permitted the president's lawyers to challenge evidence brought against him.
"This is like presenting a case to a grand jury, which is never done in public," Andrew Napolitano explained.
During an appearance on "Cavuto: Coast to Coast," Fox News legal analyst Judge Andrew Napolitano claimed President Donald Trump violated the U.S. Constitution and "bought himself an enormous headache" with the decision to hold next year's G7 summit at the Trump Doral Miami golf resort.
"Impeachment is always constitutional if it originates in the House and if its basis is arguably for treason, bribery or other high crimes and misdemeanors," wrote Andrew Napolitano in an op-ed.
The president "recognized that sending American troops to Syria is not in the best national security interest of the United States," Andrew Napolitano said.
"They will give cover to crazies who crave violence, as other intemperate words of his have done," Andrew Napolitano wrote.
"I don't know any reason to investigate Joe Biden or Hunter Biden according to Ukrainian law," Ukraine's former prosecutor Yuriy Lutsenko has said.