Amadeus gave us half of the story:
A teacher (forgive me, I don't remember what city) was recently forbidden to use excerpts from the declaration of independence, and the diaries of the founding fathers, because he was showing that they held beliefs about God. As far as I know, he wasn't promoting religion, just stating that they had belief.
Here is the rest of the story:
a schoolteacher, Stephen Williams of Mountain View, California, was passing out supplementary literature along with copies of the Declaration of Independence. As evidenced in Case Number C 04 4946 Williams vs. Vidmar, the supplementary materials included:
• A letter from George W. Bush proclaiming the National Day of Prayer - e.g. - "Prayer is an opportunity to praise God for His mighty works, His gift of freedom, His mercy, and His boundless love...According to
Scripture, 'the Lord is near to all who call upon Him...He also will hear their cry, and save them.'"
• A two page list of Religious Clauses in State Constitutions - e.g. - Georgia - Article VI (1977) "The representatives shall be chosen out of the residents in each county...and they shall be of the
Protestant religion..."
• A list of quotes titled "What Great Leaders Have Said About the
Bible" - e.g. - George Washington...It is impossible to rightly govern the world without the
Bible. and Jesus Christ...It is written, man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.
• Excerpts from George Washington's Prayer Journal - e.g. - Sunday Evening O most Glorious God, in
Jesus Christ my merciful and loving father, I acknowledge and confess my guilt...
• Excerpts from John Adams' Diary - e.g. - The
Christian religion is above all the religions that ever prevailed or existed in ancient or modern times, the religion of wisdom, virtue, equity, and humanity, let the blackguard Paine say what he will; it is resignation to God, it is goodness itself to man.
• A fact sheet titled, "Currency & Coins - History of 'In God We Trust'" –
Clearly the teacher was promoting Protestant Christianity. This is inappropriate.
The USA is (arguably) a Deist nation, but not a Christian nation.