David Barton

David Barton is an American evangelical author and political activist for Christian nationalist causes. He is the founder of WallBuilders, LLC, a Texas-based organization that promotes pseudohistory about the religious basis of the United States.
Barton's work is devoted to advancing the discredited idea that the United States was founded as an explicitly Christian nation and rejecting the notion that the United States Constitution calls for separation of church and state. Scholars of history and law have described his research as highly flawed, "pseudoscholarship" and spreading "outright falsehoods".
Barton is a former vice chair of the Republican Party of Texas and served as director of Keep the Promise PAC, a political action committee that supported the unsuccessful Ted Cruz 2016 presidential campaign.