Louisiana will become the first state to require that public universities and K-12 schools display the Ten Commandments in every classroom after the Senate voted overwhelmingly to push forward new
Everson v. Board of Education ... was a landmark decision of the United States Supreme Court that applied the Establishment Clause of the First Amendment to state law.
There are so many cases of promoting Christianity by the US government, a few cherrypicked cases of "trouble" doesn't disprove any of this.
"As a matter of historical tradition, the words 'under God' can no more be expunged from the national consciousness than the words 'In God We Trust' from every coin in the land, than the words 'so help me God' from every presidential oath since 1789, or than the prayer that has opened every congressional session of legislative business since 1787." https://en.wikipedia.org/wiki/Pledge_of_Allegiance#Legal_challenges
That is an extremely narrow view of the First Amendment that goes against over two centuries of judicial precedent. Only a Clarence Thomas-level originalist would make such an argument.
"the Pledge of Allegiance does not violate the rights of those who don't believe in God and does not have to be removed from the patriotic message"
"As a matter of historical tradition, the words 'under God' can no more be expunged from the national consciousness than the words 'In God We Trust' from every coin in the land, than the words 'so help me God' from every presidential oath since 1789, or than the prayer that has opened every congressional session of legislative business since 1787."
Not if the 14th amendment has anything to say about it. The incorporation doctrine of the 14th amendment applies the first 10 amendments to the state level as well.