In the law firmsClark, Hill PLC added John F. Schomberg as senior counsel in the firm’s government and public affairs practice group.Schomberg practices in complex state and local regulatory and litigation matters, regulatory compliance and investigations.He was previously served as general counsel to Gov. Patrick J. Quinn from 2010 to early this year.• Mayer, Brown LLP litigation and dispute resolution partner Lori E. Lightfoot has been appointed as the next chair of the Chicago Police Board by Mayor Rahm …