In addition to their education, LPCs must obtain supervised clinical experience and must pass a state licensing exam. Different states require one of several different licensing examinations. Examples are the National Counselor Examination for Licensure and Certification (NCE) as well as the National Certified Mental Health Counselor Examination (NCMHCE). LPCs are regulated by federal and state laws, which either protect the title of LPC or LMHC or actually define the scope of practice of a professional counselor and stipulate certain client protections. If an LPC is also a member of a professional association or has received additional certifications, they must adhere to the codes of ethics of the professional association or certification body with which they have aligned.