In United States v. Padilla, 559 U.S. 356 (2010), the United States Supreme Court held that the Sixth Amendment requires attorneys to inform their non-citizen clients of the immigration consequences of entering a guilty plea in criminal cases. In many situations, entering such a plea, even in a misdemeanor case, can result in deportation. An order of deportation can occur many years after the guilty plea, much to the surprise of the client. Padilla recognized that a lawyer who fails to advise their client of the potential for deportation is not competent, so that a plea entered without such advice is not a voluntary plea and therefore, can be vacated. A question left open by the Padilla decision was whether it was retroactive, meaning a person whose plea was entered before Padilla became final could also vacate their plea if not properly advised.