The ISBA ethics opinion database is online and organized by year, subject and a general search.ISBA Professional Conduct Advisory Opinion No. 12-09, March 2012Digest: A lawyer not admitted in Illinois may not primarily practice in this state, physically or through a virtual office, even if the co-owner of the law firm is a lawyer, licensed in Illinois, who has direct supervision of the non-admitted lawyer on matters involving Illinois clients.References: Illinois Rules of Professional Conduct 5.5, 7.1, 8.5(a)ABA Report of the Commission on Multijurisdictional Practice (2002)Illinois Supreme Court Rule 721(a)(4)Ohio Sup. Ct., Bd. of Comm’rs on Grievances & Discipline, Opinion 2011-2FactsTwo attorneys wish to establish a law practice owned 50/50 between them. One is licensed only in Illinois, one is licensed only in State X.Both live and primarily work in Illinois. However, the attorney licensed in State X makes frequent visits to State X for networking and to cultivate a client base there. The attorneys agree that the Illinois-licensed attorney will have direct supervision and ultimate authority over matters involving Illinois clients, although the State X-licensed attorney will interact with Illinois clients and dispense legal advice to them from time to time.