That is ridiculous.
Try reading "Legacy of Ashes: The History of the CIA" by Tim Wiener. You'll think differently.
CIA Director George Tenet told the Senate Intelligence Committee on September 17, 2002: "Iraq provided al Qaeda with various kinds of training--combat, bomb-making, and chemical, biological, radiological and nuclear." He based that statement on the confessions of a single source--Ibn al-Shakh al-Libi, a fringe player who had been beaten, stuffed in a two foot square box for 17 hours, and threatened with prolonged torture. The prisoner had recanted after the threat of torture had receded.
James L. Pavitt said "We did not have many Iraqi sources" on June 21, 2004. The best source the CIA had was provided by the French Intelligence Service, which had cultivated Naji Sabri, Iraq's foreign minister, as its agent. Sabri said that Saddam did not have an active nuclear or biological weapons program. Evidently his reporting was rejected by the CIA.
By the way, Pavitt resigned from the CIA on July 12, 2004, a day after George Tenet.
Whatever info the CIA received, they chose to believe the worst, and reject the truth, something they've been doing since 1947 when the agency came into being.
Colonel Larry Wilkerson, Colin Powell's top military assistant. He said: "I can still hear George Tenet telling me, and telling my boss in the bowels of the CIA that the intelligence was rock solid. I sat in the room looking into his eyes, as did the Secretary of State, and heard it with the firmness that only George Tenet could give it...George Tenet assuring Colin Powell that the information he was presenting at the U.N. was ironclad, only to have that same individual call the Secretary on more than one occasion in the ensuing months after the presentation and tell him that central pillars of his presentation were indeed false."
The CIA has lied to every President since it began, and yes, likely lied to Obama and of course Biden. I won't feel sorry for any of them at the CIA if Trump finds out they've lied to him on this.