Do the founders, leaders, influencers and great thinkers of our country want religion ruling over law? 
Morality is doing what is right no matter what you are told. Religion is doing what you are told no matter what is right.
"I do not feel obliged to believe that the same God who endowed us with sense, reason, and intellect, had intended for us to forgo their use." --Galileo Galilei

"Go to heaven for the climate, Hell for the company." --Mark Twain

"Christianity neither is, nor ever was a part of the common law." --Thomas Jefferson, Feb 10, 1814

"All the while that Afghanistan's ruling Taliban has been protecting Osama bin Laden, Italy has been harboring another omnipotent religious zealot, one who equally condemns us Western sinners and incites violence with his incendiary rhetoric.  Yes, right there on the European mainland!  Meet John Paul II, Christian fundamentalist extraordinaire and a man who inspires thugs across the globe who commit hate crimes against homosexuals."
--Michelangelo Signorile, New York Press, November 21, 2001

"Is god willing to prevent evil but not able? Then he is not omnipotent. Is he able but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him god?" --Epicurus (341-270 BCE)

"In the long run nothing can withstand reason and experience, and the contradiction religion offers to both is only too palpable." --Sigmund Freud  (not that I like to give credit to my good buddy, Freud)

"We dance around in a ring and suppose, while the secret sits in the middle and knows." --Robert Frost

"I believe the spreading of Catholicism to be the most horrible means of political and social degradation left in the world." --Charles Dickens

"To assert that Christianity communicated to man moral truths previously unknown, argues on the part of the asserter either gross ignorance or else willful fraud.... The system of morals expounded in the New Testament contains no maxims which had not been previously enunciated." --Henry Thomas Buckle"Reason shapes the future, but superstition infects the present." --Iain M Banks

"Religion is all bunk." --Thomas Edison

"The Bible and the Church have been the greatest stumbling blocks in the way of women's emancipation." --Elizabeth Cady Stanton

"God and Country are an unbeatable team; they break all records for oppression and bloodshed." --Luis Buquel

"It's an incredible con job when you think of it, to believe something now in exchange for life after death. Even corporations with all their reward systems don't try to make it posthumous." --Gloria Steinem

"Religious bondage shackles and debilitates the mind and unfits it for every noble enterprise." --James Madison

"I do not believe in the immortality of the individual, and I consider ethics to be an exclusively human concern with no superhuman authority behind it." --Albert Einstein

"Any system of religion that has anything in it that shocks the mind of a child, cannot be a true system." --Thomas Paine

"I distrust those people who know so well what God wants them to do because I notice it always coincides with their own desires." --Susan B. Anthony

"Leave the matter of religion to the family altar, the church, and the private schools, supported entirely by private contributions. Keep the church and the state forever separated." --Ulysses S. Grant

"I can hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believe, and this would include my Father, Brother, and almost all my best friends, will be everlastingly punished. And this is a damnable doctrine." --Charles Darwin

"The man who is always worrying about whether or not his soul would be damned generally has a soul that isn't worth a damn." --Oliver Wendell Holmes, Sr.

"The United States of America should have a foundation free from the influence of clergy." --George Washington

"The ability of the theist to misunderstand a thing is directly proportional to the obviousness of the thing." --Oscar Wilde

"If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed." --Albert Einstein
Or check out what one of A&A's worshipped idols (Katha!) has to say here.