[1][2][3] The Financial Times gave The Case for Impeachment a positive review, writing: "Lichtman's powerful book is a reminder that we are only at the start of the Trump investigations.

Lichtman explains to the reader the Foreign Emoluments Clause of the constitution, barring the president from taking personal monetary offerings from other governments.

The author contends impeachment could be brought for actions by the president intended to benefit himself financially based on inside information about economic dealings.

Discussion of prior impeachment proceedings for presidents Andrew Johnson and Bill Clinton are placed within historical context, and the book makes comparisons between Trump and Richard Nixon.

"[2] Lichtman argues that Trump's failure to learn from Nixon's negative example will harm his presidency, noting: "They also shared a compulsion to deflect blame, and they were riddled with insecurities."

He criticizes what he documents as Trump's disregard for veracity: "Neither man allowed the law, the truth, the free press, or the potential for collateral damage to others to impede their personal agendas.

"[2] Lichtman feels Trump and Nixon's potential political success can be viewed as stifled by a perceived need for covert decision making devoid of critical viewpoints: "They obsessed over secrecy and thirsted for control without dissent.

[2] In a proposal that the author acknowledges is unlikely, he submits the International Criminal Court could potentially prosecute the president for crimes against humanity related to reneging on agreements to combat climate change.

Events contained in the discussion of this topic are later contrasted with the fact that despite such details, Trump garnered a majority of white female voters' support compared to his opponent Hillary Clinton.

[1][2][3] Lichtman takes the reader through the Russian interference in the 2016 United States elections and the many suspicious links between Trump associates and Russian officials and spies, and writes that President Trump: "stands a chance of becoming the first American president charged with treason or the failure to report treason by agents and associates".

[4][2][8] Lichtman had published the book The Keys to the White House in 1996 about a system he created, inspired by earthquake research, to predict the outcome of US presidential elections.

[2] Lichtman explained to Steve Scully of C-SPAN his reason for writing the book, "I wrote it as a deep historical analysis for the history of the impeachment process prior to the presidency.

[13] He explained why he chose to write the book at this particular point, emphasizing it was to provide a guide for the public, and "because impeachment is a political process that occurs outside of the courts.

[25] The Washington Post journalist Carlos Lozada wrote in a review that on reading the book, it was "striking to see the full argument unfold and realize that you don't have to be a zealot to imagine some version of it happening".

"[2] Joy Lo Dico reviewed the book for the London Evening Standard writing: "His argument races through 200 pages, with steam for more.

"[3] AM Joy host Joy-Ann Reid said it was a "fascinating book," particularly because Lichtman had been one of the only prognosticators to correctly predict Trump would win the 2016 election.

"[5] CBC News interviewed academics including constitutional law expert and resource for the U.S. House Judiciary Committee in the impeachment of Bill Clinton, Susan Low Bloch, who were skeptical of some of the book's arguments.

[28] Lichtman remarked to Salon that Comey's firing and circumstantial evidence of 2016 election coordination between the Trump campaign and Russia were reasons for impeachment.

[31][32] Writing in The Hill Lichtman said that Paul Ryan's assertions that some of the president's actions could be excused because of ignorance or naivety were indefensible, and would not stand.