Former FBI Director James Comey will be publishing his memoirs in Spring 2018, his publisher announced on Wednesday.
In a statement, Senator Ben Cardin, Ranking Member of the Senate Foreign Relations Committee, said Trump's firing of Comey and his continuing public criticism and intimidation of Attorney General Sessions and Deputy Attorney General Rod Rosenstein shows that "the President has little respect for the rule of law or separation of powers".
Wray would replace Comey, who was abruptly fired by Trump in May amid an investigation into Russia's meddling in the 2016 election and possible ties to the Trump campaign.
The publishing company told the AP that the former Federal Bureau of Investigation director will share private anecdotes from his career and use "examples from some of the highest-stakes situations in the past two decades of American government".
"His book promises to take us inside those extraordinary moments in our history, showing us how these leaders have behaved under pressure".
Trump's firing of Comey and his continued criticism of the Russian Federation investigation have raised concerns in both parties about his respect for the historic independence of the bureau and its continuing counterintelligence probe of potential ties between his campaign and Kremlin officials. Comey has since testified before Congress that Trump asked him to end an investigation into former National Security Adviser Michael T. Flynn and kept memos about his meetings with the president. The book is as yet untitled and Flatiron did not disclose the size of the advance.
Comey was represented by Matt Latimer and Keith Urbahn of Javelin.
Several publishers bid for the book and three officials with knowledge of the negotiations said the auction topped $2m, according to AP.
Wray worked in the Department of Justice during President George W. Bush's administration from 2003 until 2005. (The program was eventually restructured).
Five Democrats cast their ballots Tuesday afternoon opposing the confirmation of Christopher Wray, President Donald Trump's nominee to lead the country's top investigative agency.