It is true that that Christianity was the majority religion of the first european colonists, it was the majority religion at the time of the country's founding and has remained by far the dominant religion throughout the history of our country. There is no doubt that the country was settled by Christians and has been populated by a Christian majority.
USA founded as a Christian Nation? Quotes from Jefferson, Adams, Washington
This country was founded by Christians, and all the way to today over 80% of the population describes themselves as Christian....Yet we have your statement.....Sorry dude, you're just wrong.