He loves it - almost as much as he loves exercizing unchecked, unaccountable executive power. From the Council on Foreign Relations:
The "state secrets" privilege allows the sitting U.S. president to nearly unilaterally withhold documents from the courts, Congress and the public. At the height of the Cold War, the administration used the privilege only 6 times between 1953 and 1976. Since 2001, it has been used a reported 39 times….