Final answer:
A lawyer must not make false statements of material fact while representing a client as it is critical to maintaining legal integrity and justice. Ethical standards require lawyers to provide honest counsel, and failure to do so can fall below the requisite standard of reasonableness expected in legal representation.
Step-by-step explanation:
A lawyer must uphold the law and ethical standards of the legal profession. One crucial aspect of this duty is that the lawyer must not knowingly make a false statement of material fact when representing a client. This principle is in place to maintain the integrity of the legal process and to ensure that justice is served.
Lawyers must provide accurate information when dealing with others on behalf of clients to avoid misleading the court, the opposition, or any other parties involved in a legal matter. Legal representation and the counsel provided by a lawyer are protected under the Sixth Amendment, as in Glasser v. United States, which established the importance of conflict-free legal representation.
Additionally, under cases like Strickland v. Washington and Padilla v. Kentucky, lawyers are expected to perform to an objective standard of reasonableness, and they are duty-bound to inform clients of significant legal repercussions like deportation risks.