I can say with certainty I would give up some of my privacy to feel safer however, I would not give up all of it. The USA PATRIOT Act passed after 9/11 in my opinion disregards the trust of the American people in the government. For example, part of the USA PATRIOT Act, passed after 9/11 before its revisions, enabled the Federal Bureau of Investigation to tap the telephones of people inside the US without a warrant. This violates the First Amendment because Americans are not free to speak. Someone could be eavesdropping. They can be investigated for exercising their right to free speech. This means their speech is not free, their words cannot be expressed without fear of sanction. In order to maintain a balance between privacy and security there needs to checkpoints to ensure the government is not overstepping the bounds of the Constitution. I believe an effective checkpoint to hold the government accountable to obeying the Constitution is the court of law. There should be a judge, a second opinion who is experienced in executing the law, to permit the eavesdropping on private conversations. If the issuing of a warrant might alert the terrorist that he or she is under scrutiny, the court proceedings can be kept secret and made public when the information is no longer relevant. This way, we can be sure the world Cory Doctorow writes about in Little Brother does not become a reality.
This is not the case. Many of the information disclosed after 9/11 show that the US intelligence agencies are aware of Osama bin Laden. It is only because the US intelligence agencies have complex systems, serious internal consumption, lack of unified command, cooperation and scheduling, etc. Take the possession of Osama bin Laden seriously. For example, the FBI agent John O'Neill was the person directly responsible for investigating Osama bin Laden before 9/11, but he eventually retired from the FBI and became a victim of a terrorist attack on September 11. It can be said that John O'Neill has an almost crazy obsession with investigating bin Laden. In order to investigate Osama bin Laden, John O'Neill needs a lot of intelligence support, but the Bureau of Investigation did not give enough support to O'Neill's work. The FBI has always been ruthless for employees who have a distinct personality, ambitious and dare to challenge mainstream thinking.
John O'Neill can be said to be the closest person to Osama bin Laden before the 9/11, but he was ruined by the FBI and other intelligence agencies' endless internal consumption. In 2004, the investigation report issued by the Independent Investigation Committee of the 9/11 Congress showed The CIA and the National Security Bureau have long mastered the information that John O'Neill needs, but refused to share it. This mechanism for refusing to share information among government agencies comes from the Federal Criminal Procedure Regulations, which prohibits the disclosure of any material related to criminal investigations. Later, this rule was restricted by the FBI to limit the investigators of this Council. Means: It is strictly forbidden for anyone to share information, even for agents in this Council. Like the Bureau of Investigation, the CIA has also turned this barrier between its own and the Bureau of Investigation into a system. The CIA believes that sharing intelligence may undermine “sensitive sources and means”. The National Security Agency directly limits the transmission of important information. Agents of other agencies can only see brief reports on intelligence, and cannot obtain the original monitoring records of the National Security Bureau.
From these details, we can see that the main part is that the United State didn't make a very comprehensive protection.