The Trump administration letter said "the manuscript may not be published or otherwise disclosed without the deletion of this classified information". James Lankford posted a video on Facebook saying the White House should send a copy of the book manuscript to senators. Chief Democratic prosecutor Adam Schiff said Bolton's testimony was essential to a "fair trial".
The Trump administration has flagged what it considers classified material in the soon-to-be-published memoir. Democrats need four Republican senators to join them in voting for witnesses in order to get a majority in the 100-seat Senate.
Democratic impeachment managers have relentlessly played a public statement Mulvaney made to White House reporters, when he acknowledged a quid pro quo and said it happens "all the time" in foreign policy, only to walk back the statement.
There seems to be some sentiment in the U.S. Senate, even among a few Republicans, for calling former national security adviser John Bolton as a witness in the impeachment trial of President Donald Trump.
The Senate is expected to acquit Trump but allowing witnesses such as Bolton could inflict political damage on him as he seeks re-election on November 3. Republican leaders are hoping to vote as quickly as possible to acquit Trump, leaving him in office.
A so-called "bombshell" excerpt from former National Security Adviser John Bolton's latest book was leaked over the weekend.
'Sopranos' actress says Weinstein raped her
Dunning says Weinstein grabbed her vagina in 2004 and Wulff is to testify that the defendant masturbated in front of her. Until then, to her rape meant something that could happen in dark places and back alleyways by someone you didn't know.
In his letter, Cooper asks the NSC to rapidly conclude its review of the manuscript, in light of the possibility Bolton may be subpoenaed to appear at Trump's trial. Meanwhile, Bolton, his publisher and book agents have denied "coordination" with the New York Times.
Former National Security Council aide Fiona Hill indicated Bolton said he didn't want to be involved in "whatever drug deal" was being cooked up and described the former NY mayor as "a hand grenade who's going to blow everybody up".
Sunday, The New York Times reported that in a transcript of his upcoming book, Bolton wrote that President Trump had personally told him that the $400 million in military aid Congress authorized for Ukraine would be held until the nation announced an investigation of Trump's potential 2020 Presidential race opponent, Joe Biden.
Taking turns by party, senators spent 10 hours submitting written questions, which were then read aloud to the chamber by Supreme Court Chief Justice John Roberts, who is presiding over just the third impeachment trial of a president in United States history. It suggests that within days of former Vice President Joe Biden's entrance into the 2020 presidential campaign, Trump tasked his top officials to work with Giuliani on an effort to pressure Ukraine to announce an investigation targeting Biden - one that Trump's attorneys have already insisted was not a matter of USA foreign policy.
The manuscript for Bolton's book has been under under review by the NSC's Records Management Division for weeks, and Washington has been seized by a blame game over who leaked its details. "This institution will be effectively paralyzed for months on end", he said.
The White House had no comment.
Trump has suggested that he might attempt to assert executive privilege and block Bolton's testimony, though legal experts say the President's tweets describing his conversations with Bolton about Ukraine might undermine any such assertion. Bolton has already indicated to lawmakers that he will testify if called, despite Trump's order banning his former and current aides from cooperating in the probe, which he has repeatedly dismissed as a "hoax" and "witch hunt".