An especially thorny issue concerned the interpretation of the secrecy which the CIA had previously enjoyed. According to its officers, the CIA's mandate included not only access to state secrets, but also the commission of covert action in furtherance of USG policy, as ordered from time to time by the President. Consequently, the CIA had a primary duty to protect such secrets and to refrain from public discussion of any covert or clandestine activity. An area of conflict arose when this CIA duty of confidentiality to the President came into direct conflict with the Agency's duty to respond honestly to legislative investigations of the executive branch authorized by the Constitution. Up until then, such potential conflict had been negotiated by quiet understandings between Congress and the CIA.