John Yoo, legal advisor to the Bush administration, has explicitly invoked Federalist No. 70 in his support for executive power over foreign policy. Referencing Hamilton, Yoo has claimed that "the centralization of authority in the President is particularly crucial in matters of national defense, war, and foreign policy, where a unitary executive can evaluate threats, consider policy choices, and mobilize national resources with a speed and energy that is far superior to any other branch." Yoo has also cited Federalist No. 70 in his support of the President's right to unilaterally conduct operations against terrorists without congressional consent. He claims that this power applies to operations against both individuals and states. At least one scholar has also argued that, because the president has the most access to national security information, only the president can know when the War on Terror is over and no longer mandates an expansive executive authority.