"As the government of the United States of America is not in any sense founded on the Christian Religion."
ARTICLE 11; Treaty of Tripoli, 1796, 1806"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof."
Bill of Rights."The United States have adventured upon a great and noble experiment, which is believed to have been hazarded in the absence of all previous precedent -- that of total separation of Church and State. No religious establishment by law exists among us."
John Tyler, 10th President of the United States of America. "One of the great strengths of the United States is
we have a very large Christian population -- we do not consider ourselves a Christian nation or a Jewish nation or a Muslim nation. We consider ourselves a nation of citizens who are bound by ideals and a set of values."
United States President Barack Obama.
Constitution Lecture 9: Separation of Church and State - [link]
Also, you may take notice that there is no mention of the Christian God ANYWHERE in the Constitution. The omission of God in the Constitution did not come out of forgetfulness, but rather out of the Founding Fathers purposeful intentions to keep government separate from religion.EDIT
: I'm not surprised this stamp has caused so much controversy, but I am surprised that someone has actually gone as far to go through all of the comments and spam them. I think I need a good pat on the back.