The US no longer has a judiciary. This former branch of government has transitioned into an enabler of executive branch fascism.
Privacy is a civil liberty protected by the US Constitution. The Constitution relies on courts to enforce its prohibitions against intrusive government, but if the executive branch claims (no proof required) “national security,” courts kiss the Constitution good-bye.
Federal judges are chosen by the executive branch. The senate can refuse to confirm, but that is rare. The executive branch chooses judges who are friendly to executive power. This is especially the case for the appeals courts and the Supreme Court. The Justice (sic) Department keeps tabs on district court judges who rule against the government, and these judges don’t make it to the higher courts. The result over time is to erode civil liberty.