What Boebert said is a big deal. That "stinking letter" to which she referred was written by none other than Thomas Jefferson to the Danbury Baptists of Connecticut.
Jefferson knew more about the intent of the First Amendment than this fricking airhead does.
The religious people of that time knew more than the right wing fundamentalists do today the harm that comes from NOT separating church and state. And it is ironic that Boebert's statement actually confirms the very thing they sought to avoid.
You see, when you mix church and state, you aren't just infecting the state with religion. More importantly, you are infecting the religion with politics. Boebert in the pulpit is proof positive of this.
I will let Alexis de Tocqueville take it from here:
The unbelievers of Europe attack the Christians as their political opponents rather than as their religious adversaries; they hate the Christian religion as the opinion of a party much more than as an error of belief; and they reject the clergy less because they are the representatives of the Deity than because they are the allies of government.
In Europe, Christianity has been intimately united to the powers of the earth. Those powers are now in decay, and it is, as it were, buried under their ruins. The living body of religion has been bound down to the dead corpse of superannuated polity; cut but the bonds that restrain it, and it will rise once more. I do not know what could restore the Christian church of Europe to the energy of its earlier days; that power belongs to God alone; but it may be for human policy to leave to faith the full exercise of the strength which it still retains.