The District of Columbia Bar Legal Ethics Committee has issued an important opinion (available here) on the practice by immigration attorneys of executing affidavits of support for their clients. It concludes that lawyers representing immigrants cannot execute an Affidavit of Support (U.S. Citizenship and Immigration Services Form I-864) on the immigrant’s behalf as a joint–sponsor while continuing to represent the immigrant in the matter because doing so constitutes a conflict of interest.
The opinion states that "[t]ypically, a person who signs an Affidavit of Support agrees to support the immigrant at an annual income that is not less than 125% of the federal poverty level so that the immigrant will not become a public charge. The ensuing contractual obligations continue for years after the immigrant is admitted on the basis of the Affidavit of Support. The Affidavit of Support is a guarantee of financial assistance to a client. Such guarantees are generally prohibited by Rule 1.8(d). Because the obligations continue long after the completion of the immigration proceeding, the undertaking does not fit within the narrow safe harbor of Rule 1.8(d)(2), which allows, but does not require, financial support strictly necessary to sustain the client during a proceeding. An Affidavit of Support undertaking by a lawyer to a client is also fraught with peril under Rule 1.7(b)(4) (conflicts of interest). Thus, a lawyer who wishes to serve as a joint sponsor for an immigration client by executing an Affidavit of Support on the immigrant’s behalf must withdraw from the representation of that client before doing so."
Thanks to Mike Frisch of the Legal Profession blog for the information and link.