American Bar Association Model Rules of Professional Conduct

The American Bar Association's Model Rules of Professional Conduct (MRPC) are a set of rules and commentaries on the ethical and professional responsibilities of members of the legal profession in the United States. Although the MRPC generally is not binding law in and of itself, it is intended to be a model for state regulators of the legal profession (such as bar associations) to adopt, while leaving room for state-specific adaptations.

Source: Wikipedia — American Bar Association Model Rules of Professional Conduct (CC BY-SA 4.0)