I have no reason to doubt the Senate's findings. You have not disproven them.
The 3-1 claim has been disproven repeatedly on this thread. Over and over and over we have disproved it.
Anybody with a speck of common sense has "reason to doubt" a statistic that flies in the face of ordinary experience (i.e. most people do not see an adult bookstore on the roadside nearly as often as they see the Golden Arches, much less three times as often).
If someone told me that they'd seen a horse in a field, I'd take it at face value. If they said they'd seen a zebra, I'd want some confirmation. If told that someone had seen a centaur, I'd pretty much dismiss the claim out of hand barring some extremely strong evidence.