He attained his Bachelor's degree from Baylor University, cum laude, in 1992, majoring in Political Science with a secondary emphasis in both Russian language and general business administration. After spending a year living in Washington D.C., and working the Republican National Committee as a liaison to the Office of the Second Lady, Trey enrolled in law school at Washington and Lee University School of Law, where he earned his Juris Doctor in 1996. Currently, Trey is licensed to practice law in all of the state and federal courts in the states of Alabama and Mississippi. Trey is a partner with the law firm of Jernigan Copeland Attorneys, PLLC, in Ridgeland, where he practices general commercial and corporate law, specializing in the areas of construction law and commercial insurance coverage litigation. He is also a trained and practicing mediator, and is a trained arbitrator as well as a registered lobbyist.