- The US knew about 9/11 and let it happen. Pretty likely IMO. A while back I summed up some of the evidence that I've come across in this comment: https://ne

- The US knew about 9/11 and let it happen. Pretty likely IMO. A while back I summed up some of the evidence that I've come across in this comment: https://news.ycombinator.com/item?id=14136336 https://news.ycombinator.com/item?id=14136336 If any of my summary is off base I would like to know -- but at this point I am pretty resolute in the belief that at the very least high-level Bush administration officials should be formally investigated regarding foreknowledge of 9/11.