The Obama administration is facing renewed pressure to release a top secret report that allegedly shows that Saudi Arabia directly helped to finance the September 11 attacks.
Rand Paul, the Libertarian Republican senator from Kentucky, is demanding that Mr Obama declassify 28 pages that were redacted from a 2002 US Senate report into the 9/11 attacks.
Mr Paul, who been vocal in attacking the bulk NSA spying programmes revealed by the rogue security contractor Edward Snowden and is running for president in 2016, has now promised to file an amendment to a Senate bill that would call on Mr Obama to declassify the pages.
The blacked-out pages, which have taken on an almost mythical quality for 9/11 conspiracy theorists, were classified on the orders of George W. Bush, leading to speculation they confirmed Saudi involvement.
“Nearly every significant element that led to the attacks of Sept. 11 points to Saudi Arabia,” he said. “Money is the lifeblood of terrorism. Without money, 9/11 wouldn’t have happened.”