Though I'm not in the habit of agreeing with people like Concordia, and I wouldn't leap at the chance to call what I'm about to do "agreeing," since he's a fool, I believe the record needs to be set straight as far as what's been said here regarding the Constitution of the United States of America.
Nowhere in the Constitution does it say that Church and State, as entities, must be in any way separate, nor does it outlaw the acknowledgement of God as a concept included in any official documents (such as money) or in anything such as the pledge of allegiance.
Where most people get the misconception that such a thing exists at all is from a letter written by President Thomas Jefferson in reply to a letter sent him by the Danbury Baptist Association in 1801. He wrote:
by: Thomas Jefferson
Believing with you that religion is a matter which lies solely between man and his God; that he owes account to none other for his faith or his worship; that the legislative powers of the government reach actions only, and not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their legislature should "make no law respecting an establishment of religion, or prohibiting the free exercise thereof," thus building a wall of separation between church and State.
The concept of a "wall" separating Church and State is purely derived from Thomas Jefferson's personal interpretation of the Constitution (an interpretation which wasn't exactly strict by the standards of the day, as evidenced by the Louisiana Purchase,) which is no more valid than any other.
The Constitutional passage in question is the First Amendment:
From the Constitution:
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.
This amendment covers a lot of ground, but what we'll focus on is the first condition, which prohibits the Federal Congress from lawfully establishing an official national religion. It does not, in any way, outlaw the inclusion of religious phrases such as "In God We Trust," or "...under God," from official discussion or official property.
What amazes me are all the supposedly normal and tolerant people who suddenly emerged to defend that silly ruling by the 9th Circuit Court, and then to bitch and moan when it was overturned by the Supreme Court of the Nation. Even more amazing is the number of foreigners with opinions on the subject.
The inclusion of "...under God," in the Pledge of Allegiance is not in any way harmful or oppressive. God, as a concept, is not owned by Christianity, and its use in the Pledge does not imply any official endorsement of Christianity. Those offended by its inclusion in the Pledge could stand to learn a little tolerance, to ease their bigotry.