Justice Clark began his judicial career in 1997 when he won an open District Judge seat in the 4th Judicial District. During his tenure, he served as the judge for the newly established Drug Court from 2000-2001. He also served as Chief Judge from 2004-2006. He was a member of the Louisiana Bar Association and Fourth Judicial District Court Bar Association and past member of the Louisiana District Judges Association and Louisiana District Judges Association Executive Committee.