History does not prove that the 9/11 attacks were carried out by the United States, or even planned.
Until you can give me proof that shows the attacks at the World Trade Center, Pentagon, and Shanskville were by our own government, then you can't prove anything.
I'm not saying the government isn't greedy or uses people or whatever. But you can't say that the government carried out the attacks because they are greedy.
Some evidence, please. Of course you can't even get a fucking greencard, so this may be a difficult task for someone like you.