Did WTC 7 fall or not?

3 buildings fell in New York on 9/11. Everyone knows about the 2 -- WTC 1 & 2. Most of us don't remember the 3rd.

It was WTC 7. WTC 7 was a block away from the other buildings, it was unconnected to 1 & 2, it was not hit during the morning's events, and suffered no damage from them. But it fell.

It fell in the same straight-down, demolition-style fall as the other 2 buildings.

And here, a United States senator denies that it fell.