People tried and kind-of succeeded. It's being eroded, but it still mostly works. US generally doesn't persecute it's citizens for reporting. See Pentagon pape

People tried and kind-of succeeded. It's being eroded, but it still mostly works. US generally doesn't persecute it's citizens for reporting. See Pentagon papers. Assange is not US citizen. Guantanamo bay detainees weren't US citizens. They are free targets.