Who is responsible for regulating the practice of law in Illinois?

The regulation of the practice of law in Illinois falls under the authority of the Illinois Supreme Court, specifically through its Administrative Office. This office is tasked with overseeing the admission of new attorneys, setting ethical standards, and enforcing the rules governing the legal profession in the state. The Illinois Supreme Court has the ultimate authority over the regulation of lawyers, which includes establishing the rules of professional conduct and administering the discipline of attorneys.

While the Illinois Attorney General plays a significant role in representing the state and providing legal opinions, they do not regulate the legal profession. Similarly, the Illinois State Bar Association serves as a professional organization for attorneys, providing resources and support but does not have regulatory authority. Additionally, the Illinois Department of Professional Regulation governs licensing for many professions but does not extend its oversight to the practice of law. Thus, the role of the Illinois Supreme Court in administering legal practice is the key point that makes it the correct answer.