The 5th U.S. Circuit Court of Appeals handed Louisiana a significant legal victory this week, upholding the state's law requiring the Ten Commandments be displayed in public school classrooms. The decision overruled a lower court that had blocked the law, with all 17 active judges on the circuit weighing in, a rare moment that signals just how seriously the judiciary is taking this fight.
The core of the ruling was procedural but pointed. The 5th Circuit found the challenge was premature because the posters had never actually gone up in classrooms. The court left the door open for a future challenge once displays are in place, but for now, the law stands.
Opponents have 90 days to appeal to the Supreme Court. If they do, this case could become the vehicle for the most consequential religious expression ruling in a generation.
The 5th Circuit's logic cut directly against the strategy employed by the parents who brought the lawsuit and the organizations backing them. Rather than waiting for the law to be implemented, challengers tried to strike it down on its face, arguing that no possible application could be constitutional.
According to The Hill, the court rejected that approach, citing existing Supreme Court precedent:
"The parents (and the principal dissent) seek to sidestep this difficulty by framing the case as an attack on H.B. 71's minimum requirements alone. But an unripe challenge does not become ripe merely because a party asserts that the challenged action would be unlawful on any conceivable set of facts. The Supreme Court has squarely rejected that approach."
In other words, you cannot sue over a poster that doesn't exist yet. The challengers tried to skip ahead in line, and the 5th Circuit sent them to the back.
What makes this moment different from the last 50 years of Establishment Clause litigation is a single Supreme Court decision from 2022: Kennedy v. Bremerton School District, which allowed a football coach to pray at the 50-yard line after high school games.
Kelly Shackelford, president, CEO, and chief counsel at First Liberty Institute, explained just how much that case changed the terrain:
"Within that decision, there was this major precedent called the Lemon test and, in that case, they said Lemon, which had been the precedent for 50 years and had been cited over 7,000 times to kind of stop different types of religious expression in public — they overruled it. They threw it out. They said it wasn't good law. And so, what that does is that that opens up a whole lot of things that people don't realize are now totally protected by the Constitution."
For half a century, the Lemon test served as the go-to weapon for anyone who wanted to scrub religious expression from public life. Courts applied it reflexively. Advocacy groups cited it like scripture. And it worked, over and over, to push faith further from the public square.
Then the Supreme Court threw it out. The implications are still catching up.
Shackelford was direct about what that means for laws like Louisiana's: "I just think these laws are going to be upheld now, after the Kennedy decision."
Louisiana was the first state to pass a law in 2024 requiring the Ten Commandments be displayed in classrooms "in easily readable letters." It was not the last. Texas passed similar legislation, and Arkansas faces its own legal battle at the U.S. 8th Circuit Court of Appeals.
Joe Davis, senior counsel at Becket and the attorney representing Louisiana, explained how the 5th Circuit ruling radiates outward:
"The 5th Circuit's ruling is going to be binding precedent on the Texas case, for sure, since that case also arises in the 5th Circuit. The 8th Circuit doesn't have to follow the 5th Circuit, but I would expect it to, given that the opinion has a great deal of persuasive value, so I do think it's going to be quite relevant in those cases."
The 5th Circuit heard arguments for both the Louisiana and Texas cases, but did not make a ruling on Texas. Davis noted that the Texas case could still go differently in scope:
"Maybe they reach the merits of the issue and decide whether the Texas law is constitutional or not, rather than resolving it solely on jurisdictional grounds. I think we just have to see."
If the Texas case produces a merits ruling, the legal picture sharpens considerably. A circuit split with the 8th Circuit would almost guarantee Supreme Court review. Even without a split, the sheer cultural magnitude of this issue makes certiorari likely if challengers appeal.
Rachel Laser, president and CEO of Americans United for Separation of Church and State, one of the organizations in the lawsuit, offered a measured response that revealed more by what it didn't say than what it did:
"We're certainly going to continue fighting for the religious freedom of Louisiana parents and children, but the specific next steps are still under discussion."
Note the framing. Laser cast the fight as one for "religious freedom," a rhetorical choice designed to make opposition to public religious expression sound like a defense of religion itself. It's a familiar inversion. Groups that have spent decades working to remove every trace of faith from government institutions now claim the mantle of religious liberty.
The challengers have not yet announced their next move. They could appeal to the Supreme Court within the 90-day window, or they could wait for the posters to actually appear in classrooms and file a new challenge on different grounds. Either path leads toward the same destination.
The legal mechanics matter. Ripeness doctrine, circuit precedent, and the death of the Lemon test. But beneath the procedural layers sits a straightforward question that Americans have debated since the founding: can a state acknowledge the moral tradition that shaped its laws?
For decades, the answer from federal courts was effectively no. The Lemon test made any religious display in a government setting presumptively suspect. Schools, courthouses, and public parks became sterile zones where acknowledgment of the Judeo-Christian tradition was treated as constitutional contamination.
The Supreme Court has been dismantling that framework piece by piece. While religious charter schools were struck down by the Supreme Court last year, the broader trajectory favors a more historically grounded understanding of the First Amendment, one that distinguishes between establishing a state religion and simply recognizing the moral foundations of Western civilization.
Louisiana passed a law. A court blocked it before a single poster reached a single wall. The 5th Circuit said that was premature. Now the question moves upward, toward the nine justices who will ultimately decide whether the Ten Commandments can occupy a few square feet of classroom space in a nation whose courthouses already display them in marble.
The posters haven't gone up yet. The fight over them has already begun.
