While Dershowitz has been critical of Trump and many of his policies, he wrote that he defends the president's "civil liberties." In turn, Dershowitz said he's been ostracized in social circles for sometimes backing the president.
"(My old friends) are shunning me and trying to ban me from their social life on Martha’s Vineyard," Dershowitz wrote in The Hill. "I never thought I would see McCarthyism come to Martha’s Vineyard, but I have."
Dershowitz explained that at least one friend has said he won't attend parties if Dershowitz were invited.
Dershowitz has argued that Trump had the constitutional authority to fire former FBI director James Comey and therefore should not be charged with obstruction of justice. He added that an independent, non-partisan commission, rather than a special counsel, should have been appointed to investigate Russia's influence in the 2016 presidential election.
Dershowitz told the New York Times in an interview published Saturday that he's been calling for Trump "to be treated fairly. Not to have it considered a crime when you fire, when you exercise your Article II powers under the Constitution."
The Harvard lawyer has also said he'd have defended Hillary Clinton similarly if she were elected, and he wrote a book defending former president Bill Clinton during his impeachment scandal. Dershowitz's book "The Case Against Impeaching Trump" is set to publish Monday.
"I’m a Hillary Clinton liberal Democrat who’s trying hard to restore Congress to the Democrats, who will help finance Democratic candidates all over the country," Dershowitz told The Times. "I’m a liberal Democrat. I haven’t changed one iota in 50 years. I am not a Trump supporter. I’m a supporter of civil liberties. Calling me a Trump supporter is like calling me a communist supporter in the 1950s."