House Republican members are defying Speaker John Boehner (R-Ohio) and five committee chairmen by endorsing a measure that would set up a special panel to investigate the deadly attacks in Benghazi, Libya. A growing number of members on the committees with jurisdiction over the Benghazi matter — Intelligence, Judiciary, Oversight and Government Reform, Armed Services and Foreign Affairs — have signed onto Rep. Frank Wolf’s (R-Va.) resolution. Boehner and the chairmen of those committees do not support the legislation. Instead, they have worked together to investigate the Obama administration’s handling of the Sept. 11, 2012 assault. Despite that resistance, Wolf...