The intercepts occurred under CIA Director John Brennan and Director of National Intelligence James Clapper. The new disclosures are contained in two letters of “Congressional notification” originally written to key members of Congress in March 2014, but kept secret until now. In the letters, then-Intelligence Community Inspector General Charles McCullough tells four key members of Congress that during “routing counterintelligence monitoring of Government computer systems,” the CIA collected emails between Congressional staff and the CIA’s head of whistleblowing and source protection. McCullough states that he’s concerned “about the potential compromise to whistleblower confidentiality and the consequent ‘chilling effect’ that the...