Mayer Brown appointed Joanna K. Horsnail as managing partner of its Chicago office.Horsnail has been with the firm nearly 25 years and held many leadership roles. She has advised on numerous transformational deals for clients such as the city of Chicago and state of Illinois. Recently, she counseled on the deal securing the James R. Thompson Center as the corporate headquarters for Google.• Rimon Law added Bob Goldman to its real estate team as a partner in Chicago. He joins from DLA Piper. Goldman practices in …