What did the Supreme Court rule that executive privilege is only extended when connected to national security?

The Supreme Court ruled that executive privilege, which allows the president to withhold information from other branches of government, is primarily justified when it concerns national security matters. This ruling emphasizes that while the executive branch has a degree of confidentiality, such privilege is not absolute and must be balanced against the needs of justice and transparency. The Court established that claims of executive privilege must be rooted in legitimate concerns for national security to be upheld.