All things belong to God, whether or not men admit to that fact.
America was founded on separation of Church and State
America was founded as a Christian nation which was tolerant of other faiths. Neither church nor state are subject to each other; but both church and state are subject to God's law, each having its own God-ordained purpose.
Church and state are separate, but they are not equal. The state exists, among other reasons, to protect the church.
Here's a cure for your apparent liberalism, Kosta...
America was founded as a nation aware of the Creator. I don't think the Declaration mentions Christ.
but both church and state are subject to God's law, each having its own God-ordained purpose
Whose God and whose interpretation of God? I don't recall ever seeing anyone with God's purpose imprinted on their foreheads.