Judge, United States Court of Appeals, Fifth Circuit
Judge Duncan received his B.A. from Louisiana State University in 1994, his J.D. from the Paul M. Hebert Law Center at Louisiana State University in 1997, and his LL.M. from Columbia Law School in 2004.
After graduating from law school, he clerked for Louisiana-based Circuit Judge John Malcolm Duhé Jr. of the United States Court of Appeals for the Fifth Circuit.
From 2008–2012, Duncan served as Appellate Chief for Louisiana's Attorney General's office. From 2012–2014, he served as general counsel of the Becket Fund for Religious Liberty. From 2004-2008, he was an assistant professor of law at the University of Mississippi School of Law.
Before becoming a judge, Duncan practiced at the Washington, D.C. firm of Schaerr Duncan LLP, where he was a founding partner. He was appointed by President Trump to the United States Court of Appeals for the Fifth Circuit on May 1, 2018.
Vice President for Legal Strategy, Stand Together
Casey Mattox is Vice President for Legal Strategy at Stand Together and Senior Advisor at
Americans for Prosperity. In these roles he advocates for and creates strategies and
partnerships to ensure a constitutionally limited government that protects the civil liberties of all
Americans. Prior to joining Stand Together and AFP Casey’s legal career focused on defending
the First Amendment rights of students, faculty, healthcare workers and religious organizations.
Casey has a J.D. from Boston College School of Law and an undergraduate degree from the
University of Virginia. You can find him on Twitter at @CaseyMattox_ and on LinkedIn at
@Casey-Mattox-ST.
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