Locked away for 13 years, the last chapter of some 800 or so pages of a report has become a contentious issue in recent weeks. The 28-pages of document pertaining to the 9/11 attacks, which came from a joint inquiry of hundreds of witnesses interviewed, was classified for “reasons of national security.”

This week, New York Senator Kirsten Gillibrand and Senator Bob Graham, who co-chaired the congressional inquiry while also chairing the Senate Select Committee on Intelligence, both believe t the victims’ families have a right to read the 28 pages before president Obama visits the Middle East in late April.

 The report is said to outline a network of people who supported the hijackers. When questioned on 60 Minutes if the network included Saudi Arabia’s government, rich people in the country or charities, Senator Graham answered “all of the above.”

The “28 pages” is now considered to be the United States’ most sensitive of documents, and may reveal an existence of Saudi support for the hijackers while they were living in the United States. Senator Graham goes on record with reporter Steve Kroft on 60 minutes, noting the 28 pages are a “key part” to understanding what took place on the eventful day.

“I think it is implausible to believe that 19 people, most of whom didn’t speak English, most of whom had never been in the United States before, many of whom didn’t have a high school education– could’ve carried out such a complicated task without some support from within the United States,” Senator Graham says.

In the latest turn of events, as a response to the push to release the 28 pages, Saudi foreign minister Adel al-Jubeir has warned Washington that if Congress pass a bill allowing the Saudi government to be held responsible for the 9/11 attacks in any way, they would sell off billions of dollars of American assets (reportedly standing at 750 billion).

However, the US government maintained in documents:

“We have found no evidence that the Saudi government as an institution or senior Saudi officials individually funded the organization,” ensuring Saudi sovereign immunity to prevent lawsuits. 

That final sentence, according to Saudi officials, exonerates them of any findings within the 28 pages, released or not.