evidence: Ramaswamy touted himself as an outsider willing to speak "truth" on stage. But most of his assertions on hot-button topics like Jan. 6, the 9/11 terror attacks and demographic changes in the U.S. were groundless or have been repeatedly debunked. [...] Ramaswamy revived his claims about 9/11 terrorist attacks, carried out by al-Qaida, and the groups truly behind it. He argued Wednesday that "the government lied to us for 20 years about Saudi Arabia's involvement in 9/11." Unlike his other theories on the debate stage, Ramaswamy's comment about Sept. 11 reflects -- at least partially -- well-known suspicions that were investigated by authorities. Fifteen of the 19 terrorists were Saudi citizens.