There is a lot of evidence that ties the fanatics at Elohim City in with the bombing, and also a lot of evidence that virtually everyone at Elohim City was a double agent, working for the FBI and the ATF, and one German intelligence agent who appears to have been working for the CIA.
There is also the mysterious missing suspect, who was then dropped.
There is also the evidence by an ordnance expert testifying that the concrete support pillars inside the building could never have been sheared off by an explosing at that distance, but that explosives must have been taped to the pillars themselves in the basement.
The only question in my mind is whether this was a sting operation that went bad, or a deliberate act of terrorism by certain agents in the FBI. Clinton had a big speech ready to go immediately after it happened, and most people agree that it turned the election around.
There was also a lot of talk that the FBI agents working in the building and their children in the daycare center were mysteriously absent that day. I don't know whether or not that story has been confirmed.
POTUS's have a staff of speechwriters on standby. (Not that I defend Clintoon or anything.)