Bush quashed investigations into Saudi Arabia over 9/11

"From the moment of 9/11 President Bush's focus was on Iraq and Saddam Hussein. He didn't want to hear about Saudi Arabia. President Bush and Director Mueller instead of furthering that effort to find the whole story quashed it. Interrogations were shut down. Documents were kept secret. And that was continued by President Obama."

Are you seeing the picture yet? Bush knew it was SA and he was covering it up? Why would he do that?