Thousands of people who were directly affected by the 9/11 terror attacks say that President Biden is not welcome at the 20th-anniversary ceremonies unless he declassifies government documents related to the attacks. Almost 2,000 family members of those who died in the attacks signed a letter to the President urging him to declassify documents believed to implicate Saudi Arabia in the attacks or not attend the 20th memorial.

Fox News reports:

“We cannot in good faith, and with veneration to those lost, sick, and injured, welcome the president to our hallowed grounds until he fulfills his commitment,” nearly 1,800 first responders, family of those killed in the attacks, and survivors wrote in a statement obtained by NBC News.

“Since the conclusion of the 9/11 Commission in 2004 much investigative evidence has been uncovered implicating Saudi government officials in supporting the attacks,” the statement says. “Through multiple administrations, the Department of Justice and the FBI have actively sought to keep this information secret and prevent the American people from learning the full truth about the 9/11 attacks.”

Among the documents the group is looking for are findings that pertain to the FBI investigation that concluded in 2016, which investigated Saudi links to the attacks.

“Twenty years later, there is simply no reason — unmerited claims of ‘national security’ or otherwise — to keep this information secret,” the group wrote. “But if President Biden reneges on his commitment and sides with the Saudi government, we would be compelled to publicly stand in objection to any participation by his administration in any memorial ceremony of 9/11.”

The group noted that during his campaign for president Biden pledges to be more transparent than past administration yet has denied the group’s request.