A native of West Monroe, Louisiana, Trey graduated from West Monroe High School in 1997 before pursuing his undergraduate degree at Louisiana College in Pineville, Louisiana. In addition to obtaining a B.A. degree, magna cum laude, in history, Trey served on the Student Government Association and was a member of a number of academic honor societies including, Omicron Delta Kappa, Alpha Lambda Delta, Alpha Mu Gamma, Sigma Tau Delta. Trey then attended Louisiana State University, Paul M. Hebert Law Center, receiving his J.D. in 2004. While at LSU, Trey was a semi-finalist in the Robert Lee Tullis Moot Court Competition in 2003 and served on the Moot Court board the following year. Upon graduation from law school, Trey returned home in 2004 and has since been practicing at Hudson, Potts & Bernstein.
Trey is a member of the Louisiana State Bar Association and the Fred J. Fudickar American Inn of Court. He is admitted to practice before the United States Supreme Court, United States Court of Appeals for the Fifth Circuit, and the United States District Courts for the Eastern, Middle and Western Districts of Louisiana.