And the fact is the United States of America is a secular nation, not a religious one.

I have to ask though, don't you think imposing Christianity on people is an insult to it? You sound less like a believer and more like a Christian nationalist. It contradicts what Jesus preached and what the Bible says. Christian nationalists in the United States desire to force their religious ideas on people through the government, which goes against the constitution's prohibition on religious establishments having any role in government. And you want to indoctrinate kids to do so. Not much difference.

Nothing peculiar to Christian morality merits a place in US law. Furthermore, every country in history that has instituted theocratic rule (no matter how good their intentions) has ended up ruthlessly suppressing the rights of its citizens, even those of the proper faith. Wanting everyone to study Bible regardless of their belief system will take us there.