Yes many LCDC'S do have felonies. However, finding employment might prove to be more difficult as larger agenicies.
Yes, it one of many options for convicted felons.
In Texas, the age of a felony conviction for applying to take the LCDC exam is typically 10 years. Misdemeanor convictions are usually considered on a case-by-case basis. It's important to check with the Texas Department of State Health Services for the most up-to-date information on eligibility criteria.
You can (LCDCIII) treat mental illness as long as there is a substance or chemical dependency issue (dual diagnosis) in the state of Ohio. Even though substance abuse counselors receive more education on psychotropic drugs and counseling techniques then social workers, chemical dependency counselors cannot treat mental illness (or at least not yet). There are many reasons for this and at the top are political arguments. Psychologist don't want to lose any revenue, insurance companies would love for cdcIII to give mental health counseling and social workers seem to be a protected occupation. The State of Ohio is still arguing to have LCDCIII and ICADC give MH counseling. We'll see.
I'm not an expert but I think you could get jobs with social services, or maybe be a counsellor. Or you could just become one of they annoying people that always say "We should all love each other" but I wouldn't reccommend that.
Other than teaching you could consider curriculum development, or professional training. There are really 3 main schools of thought with regard to advanced degrees in education. 1) Many get their masters degree in the subject they teach to prove mastery in that discipline e.g. Biology, Chemistry, Physics or Math. 2)Some get an advanced degree in counseling so they can pursue a career in guidance. Some of these people also pursue a license as a professional community counselor or LPC, LCDC or Group counselor. 3)Others want to excel in leadership in order to become academic deans, vice principals and eventually principals. However there are getting to be many more doctors working in education. I work with several of them. In this cutthroat economy there has been much talk about "degree inflation" meaning that jobs that normally require a BA would fill those positions with a masters degree. Moreover, jobs that would normally require a MS would hire someone with a PhD. Jobs that require a PhD would only hire individuals with a number of published works with peer reviewed journals. So the bottom line is the more education you have the better when you are in education.