Very little time this morning, but David Barton founded his Wallbuilders organization more than 30 years ago to promote state-sponsored prayer in schools and promote the idea that Christianity should be the preferred religion of the United States.
His first book, "To Pray or Not to Pray," had the premise that the total numbers of prayers of school children had declined from pre-1963 levels, leading to the devastation of our nation's moral, political, and social integrity. He used the image of God as a giant computer, measuring the rate and volume of prayers. When the rate and volume of prayers declined, so did God's favor. He illustrated his premise using before and after charts (pulled from two completely different sources -- if I remember correctly, one was a government source and the other (the later one) was a popular ladies magazine opinion poll).
He followed that up with his foundational work, "America's Godly Heritage" video and the book, "The Myth of Separation." The book and video contain all sorts of distortions of facts, misquote court documents, and invented quotes out of whole cloth. When I first ran across his work in the early 1990s, I had just completed a graduate course in religious liberty and all of the reading in primary sources was still fresh in my head. I also tracked down many of the Supreme Court decisions he cited and noted that he flagrantly misquoted many of them, or invented quotations from them.
Barton is a revisionist historian and his work cannot be trusted. There are some here who live him, but they have obviously not tried to go back and objectively verify items that are not a matter of opinion -- such as what certain Supreme Court decisions actually say.