The House of Representatives will be holding its 2015 Legislative Data and Transparency Conference on April 29th at the CVC. The public is invited. I will post more information as it becomes available.
Also, please remember that the OpenGov Foundation is holding a legislative data hackathon in DC running from the 29th to May 1st (which we are co-sponsoring). More information on the hackathon is here.
Update: RSVP here. Invitation below.