Barry Lynn, who is the executive director of Americans United for the Separation of Church and State discusses why he believes religion has no place in government, schools, etc. Lynn is also an ordained minister of the United Church of Christ and is a prominent leader of the "religious left." As a result, most members of the religious right -- who are traditionally the strongest opponents of church/state separation -- have castigated Lynn as being a heretic.
It is my opinion that Barry Lynn's view of religion in America's founding is very close with what the founders originally hoped to establish. Here are some of his views:
Lynn's General Views:
Barry Lynn on Fox News:
Lynn on the O'Reilly Factor:
And Lynn on Hannity & Colmes: