Through a long career in real estate and entertainment, Mr. Trump has repeatedly threatened lawsuits against authors, journalists and others who angered him, but often has not followed through, and it was unclear whether he would in this case.
.. Mr. Wolff did not reply to a request for comment, but on Wednesday night said by email that he was “wholly comfortable with my numerous sources.”
.. Most presidents have avoided legal confrontations over unflattering publications out of fear of giving them more publicity and promoting sales, but it is not unprecedented. Former President Jimmy Carter, shortly after leaving the White House, threatened to sue The Washington Post over a gossip column item asserting that his administration had bugged Blair House, the government guest quarters, while Nancy and Ronald Reagan stayed there before the 1981 inauguration. The Post retracted the item and Mr. Carter dropped the matter.
.. Charles J. Harder, the president’s lawyer, has represented Mrs. Trump and other high-profile figures in cases against the news media. Based in Beverly Hills, Calif., he won Hulk Hogan’s landmark invasion-of-privacy case against Gawker Media and until recently represented Harvey Weinstein, the Hollywood mogul.
.. Mr. Harder threatened to sue The New York Times over an article documenting sexual harassment by Mr. Weinstein. But Mr. Harder no longer represents Mr. Weinstein, and no lawsuit has been filed.
.. In an author’s note, Mr. Wolff writes that many of the accounts that he collected “are in conflict with one another; many, in Trumpian fashion, are baldly untrue.” He said he sometimes “let the players offer their versions, in turn allowing the reader to judge them,”
.. Mr. Harder cited no specific statements that he judged untrue.
.. Former Prime Minister Tony Blair of Britain denied suggesting to Jared Kushner, the president’s son-in-law and senior adviser, that British intelligence might have spied on Mr. Trump’s campaign.
.. Asked on Thursday for examples of potentially libelous inaccuracies in the book, Ms. Sanders cited only an anecdote in which Mr. Trump seemed not to recognize the name of former Speaker John A. Boehner