"The president's power to assert executive privilege is very well established", White House spokeswoman Sarah Huckabee Sanders said Monday.
Comey is scheduled to testify before the Senate Intelligence Committee on Thursday as part of an investigation into possible collusion between Trump and Russian Federation as well as Moscow's alleged meddling in the 2016 presidential election.
Comey's appearance before the Senate Intelligence Committee as part of its Russia-related investigation will be his first public testimony since his firing on 9 May.
President Donald Trump signs a decision memo and a letter to members of Congress outlining the principles of his plan to privatize the nation's air traffic control system in the East Room at the White House, Monday, June 5, 2017, in Washington.
That ended speculation that Trump may try to block potentially explosive Comey testimony on Thursday.
Donald Trump reviewing whether to block Comey testimony to Senate
Legal experts have also said that the president is likely to have undermined his ability to assert executive privilege by publicly discussing his dealings with Mr Comey in tweets and interviews.
Trump asked Comey to drop the Flynn investigation, said a person who was given a copy of a memo Comey wrote about the conversation. The Supreme Court has found that presidents enjoy a right to confidentiality in communications with their advisers but it is not an absolute privilege and courts have overriden such claims in the past.
In the weeks since, associates of Comey have said the former director felt uncomfortable about efforts by Trump to compromise the bureau's traditional independence. The White House has denied the president made that request.
"It becomes the testimony of one person", Zeldin said, "one who will then become Robert Mueller's witness in the grand jury investigation in which they will determine whether or not obstruction occurred".
Protesters assembled in Washington and other USA cities on Saturday in a "March for Truth" to demand an independent investigation into alleged connections between Trump's campaign and Russian Federation.
Did Venus Williams accidentally reveal Serena is expecting a baby girl?
The next step for Venus was to balance nutritional food that treated her disease with food she enjoyed eating. Nara actually broke Williams in the first part of the match, but the American quickly regained control.