![Legal authorities regarding warrantless surveillance of US persons [ex-CIA GC]](http://jurist-devel.justiapro.com/news/wp-content/uploads/sites/4/2021/12/jurist-white-text.png)
Legal authorities regarding warrantless surveillance of US persons, memo from Jeffrey H. Smith, former General Counsel of the CIA and a former General Counsel of the US Senate Armed Services Committee, to the Members of the US House Permanent Select Committee on Intelligence, January 3, 2006 [concluding that the 2001 Authorization to Use Military Force does not authorize a domestic surveillance program, although the President has a "weak" argument under his general constitutional authority]. Read the full text of the memo [PDF].