A history lesson is what is needed. In the 1800s before the enlightenment, there was a great void of any Christian presence.
Some of the colonies were started as a Christians colony, the others were imperial expansionism. By the time of the revolution and the founding of our country christianity was a sociopolitical identity not an actuality for many.
The it was Christians vs the Catholic irish in murderous gangland style ghetto wars shortly there after.
There has only ever been a whisper of a ghost of real christianity in this country ever.