So if you want to make an argument can be made regarding US politics, do not try to fall back on religious reasoning or appeals (unless you are just trying to preach to the choir), if a secular one can be made in it's place for the same result. because Christianity is not the only sets of ideology or philospohy to have heavily influenced the Founders, nor were the Founders unaware of the dangers of letting churches and religions officially influence policy in nation-states.
I'm aware that they learned from others outside of Judeo-Christian heritage, I've never claimed otherwise. Greek philosophy, some Roman conceptions about the Republic, some concepts that the Iriqouis had, sure, but the
core philosophy was Christian.
Also, the founding fathers never wanted a 'secular' state in the definition that militant atheists now try to turn it into. They wanted a state that would take no part in religious ideological conflicts, neither for,
nor against, and specifically tried to keep the state from becoming a tool to punish people of other faiths.
Then the atheists came and declared 'we don't count as a religion, so it's okay for
us to oppress other religious groups with the power of the state.'
This is so far from what the Founding Fathers intended, it is
literally a direct inversion. They had absolutely no problem with religious people in positions of power, and using religiously-grounded ethics behind making their decisions.
If you don't believe me, why were the Founding Fathers openly leading public prayers in government buildings? IIRC, they outright went to the level of holding church services in government buildings. The constitution simply declared that if such a thing was done under the auspices of the government, it could neither favor nor exclude anyone.
Now, we are instead come to a time where, as you aptly demonstrate, religious persecution and exclusion from government is perfectly acceptable...
...So long as that persecution is directed at Christians.