Post-9/11 Policies refer to the range of legislative and executive measures implemented by the U.S. government in response to the September 11, 2001 terrorist attacks. These policies aimed at enhancing national security and preventing future attacks often involved significant changes in law enforcement practices, intelligence gathering, and civil liberties. They have also sparked ongoing debates about the balance between security and individual freedoms, particularly in relation to the First Amendment rights of speech, assembly, and religion.