President Joe Biden and Vice President Joe Pence said in a joint statement on Wednesday that they were “frustrated and hurt” by the allegations and “not surprised” that they have not been able to verify their claims.
The two presidents were in the middle of a two-day vacation on the South Lawn of the White House.
The former first lady, the vice president and their spouses were to attend a fundraiser for former Democratic National Committee Chairwoman Debbie Wasserman Schultz.
“These allegations are not only untrue and offensive, they are a blatant attempt to tarnish the reputations of our former colleagues and their families,” Biden and Pence said.
“They are also an insult to all Americans and the country at large.
We will continue to support those who come forward and to do everything we can to help our men and women in uniform protect and defend us.”
Biden, the former Democratic vice president, and Pence were scheduled to attend the $1 million fundraiser at the Hyatt Regency on Friday.
The president and vice president are scheduled to meet with family members of service members who have been killed in combat and other survivors of sexual assault on Thursday at the White Houses Camp David National Wildlife Refuge in Maryland.
The fundraiser, which is open to the public, will be followed by a reception with the President and First Lady and their staff.
The White House said it would not confirm the number of people who were invited to the event.