Ryan, who has never served on the Intelligence Committee, seems not to understand the central bargain underpinning the creation of the intelligence committees after Watergate. In exchange for the intelligence community’s willingness to reveal closely guarded national secrets to a select group of members and staff for the purposes of oversight, the committees and the congressional leadership pledged to handle that information responsibly and without regard to politics.

That contract has now been spectacularly broken by the creation of a partisan memo that misrepresents highly classified information that will never be made public. Intelligence agencies can no longer be confident that material they provide the committee will not be repurposed and manipulated for reasons having nothing to do with national security. As a result, they will be far more reluctant to share their secrets with us in the future. Moreover, sources of information that the agencies rely upon may dry up, since they can no longer count on secrecy when the political winds are blowing. This is a grave cost for short-term political gain.