CMB Polarization Workshop, 2009 We are holding a workshop on CMB polarization experiment in Chicago on July 1-3. There is currently great scientific excitement surrounding the push to detect gravitational wave induced B-mode polarization of the Cosmic Microwave Background. The purpose of this meeting is to review and discuss the fast moving ground based and sub-orbital experimental program, and to get an update on the evolving plans for a next generation satellite mission.