I'd say,
"No doubt in my mind that those giving orders to the FBI wanted to stop the investigation ..."
However, had those in power followed the ME connection to its conclusion, and it was found to be true, and our government had taken the proper responsive action, then the argument could be made that the twin towers would still be standing, the pentegon would not have had to be rebuilt, and close to 3000 of our fellow citizens would still be with us today. We can not say for sure, but we will never know because the ME connection was buried.
All Americans, IMO, owe Jayna Davis a debt of gratitude for her tireless determination to keep pursuing this investigation, at her expense, (both financially, and physically)when her own government was doing all that it could to ignore her and obstruct her. The expense on her financially and physically has, without a doubt been great. Having worked in LE, I can only assume the risks she has taken, and the possible threats that have been leveled at her. Let us all keep her in our prayers, for God's gracious had of comfort, strength and protection over her. God Bless her and those like her that continue to try and shine the light of truth on this horrific tragedy. Again, I was there, I saw the dead, dying and injured. I stood in the daycare playground after the bombing. I saw the horror and pain and destruction. We cannot rest until we see this through to the end and those that are responsible pay the price for their involvement.
I think you are looking high enough. Most folks don't want to look that high up the line.