This is a troubling trail of Saudi nationals and officials who had contacts with, assisted, or were connected to two of the hijackers, while significant investigative material remained classified or heavily redacted. The 9/11 Commission itself said it found no evidence that the Saudi government as an institution or senior Saudi officials individually funded al-Qaida.
At the same time, subsequent FBI investigations have produced information that makes the unanswered questions considerably harder to dismiss. In particular, Operation Encore examined possible Saudi assistance to hijackers Nawaf al-Hazmi and Khalid al-Mihdhar. Later FBI releases identified Omar al-Bayoumi as a Saudi intelligence operative and documented his contacts with and assistance to the two men.
The continuing controversy is therefore less about proving a sweeping Saudi conspiracy and more about a fundamental question of government accountability:
What did American intelligence and law-enforcement agencies know, when did they know it, what did they investigate, and why did so much of the evidence remain hidden for so long?
That is an especially legitimate question now because newly released material continues to add pieces to the story. In 2026, reporting has focused on previously unseen video involving al-Bayoumi, including footage of the U.S. Capitol and a 2000 gathering involving al-Hazmi and al-Mihdhar. The families of 9/11 victims argue that this material strengthens their case concerning Saudi assistance, while Saudi Arabia continues to deny responsibility.
1. What did the FBI know?
The issue is not simply whether the FBI possessed clues. It is whether investigators adequately connected those clues and pursued them to their logical conclusion. Operation Encore continued investigating Saudi connections years after the attacks.
2. What evidence was withheld?
The infamous 28 pages concerning possible Saudi connections remained classified for years before being released in 2016, and subsequent FBI material has itself been released with substantial redactions. Senators were still demanding un-redacted Operation Encore material in 2023.
3. Why were there so few consequences?
This may be the most difficult question. Some people connected to the Saudi network were never prosecuted in the United States, and questions remain about why certain investigative leads did not produce criminal charges or extradition efforts. That does not, by itself, prove a cover-up. But it unquestionably warrants examination.
And there is an important fourth question hiding underneath all three:
Did national security become a shield against accountability? That is where this can become much more powerful. The issue isn't merely Saudi Arabia. It is whether the American public has ever received the complete story of what its own government knew about the circumstances surrounding the attack.
The 9/11 Commission investigated extraordinary volumes of material and produced the definitive public account of the attacks. Yet even its findings acknowledged serious failures within the FBI and CIA.
Twenty-five years later, the question is no longer whether America should reopen every conspiracy theory surrounding 9/11.
Isn't it whether America has finished asking legitimate questions about its own intelligence failures, its own secrecy and its own accountability?