Resolutions Censuring the President: History and Context, 1st-114th Congresses [September 14, 2017] [open pdf - 139KB]
"Censure is a reprimand adopted by one or both chambers of Congress against a Member of Congress, President, federal judge, or government official. Censure against a sitting Member involves a formal process that is sanctioned by the Constitution (Article 1, Section 5). Non-Member censure, however, is not an enforceable action and has no uniform language. Instead, non-Member censure resolutions may use a variety of terms to highlight conduct deemed by the House or Senate to be inappropriate or unauthorized. Since 1800, the House and Senate have introduced numerous resolutions to censure or condemn the President. Aside from the exceptions noted below, these resolutions have failed in committee or during floor consideration. Nevertheless, presidential censure attempts have become more frequent since the Watergate era. The most recent censure resolution was introduced on August 18, 2017, as H.Res. 496 (115th Congress). It uses the phrase censure and condemn in reference to the current President."
CRS Insight, IN10775
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html