All oaths that office holders take in America, all follow the same basic format, which is to: "… solemnly swear to support and defend the Constitution of the United States against all enemies, foreign and domestic." There wouldn't be any point of taking such an oath, if the intention for those that did so, was to ignore the very thing that they have sworn to protect. When it comes to religion in America, one would have a tendency to believe that following the Constitution would not only be paramount but would also be consistent from office holder to office holder, from year to year, but instead, the governmental religious rulings have changed significantly over the years, so much so, that a fairly strong argument could be made, that America, which initially was created as a vibrant and strong Christian nation, has morphed itself instead into what appears to be a secular State.
The thing is the Constitution is quite clear and specific about its intent in regards to religion, so that the very point of the 1st Amendment, which states in part: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof…" has been re-interpreted from its original intent and its original meaning that the Federal government through its Congress does not have the right to impose a National religion upon its population, to now become that that there should be a wall of separation between Church and State.
While some contemporary people, for whatever spurious reasons, are intent that America should be seen as a secular State, that is not consistent with the founding of America, nor is consistent with the Founding fathers and their beliefs, nor is it consistent with the Declaration of Independence, nor is it consistent with the Constitution, and it certainly is not consistent with the people that nobly advanced this country at that time. There is not necessarily anything wrong with wanting or desiring or trying to make America a secular nation, as the people have implicitly the right to alter or abolish the nature of their government, however, doing so, properly, must be done not only through the people, by the people, and for the people, but also accomplished through the auspices of a new Declaration and thereby a new Constitution, as opposed to taking known and established Constitutional law and deliberately subverting it.
If America, insists that God cannot be in our classrooms, cannot be in our justice system, cannot be in the public square, and cannot be in the way that we conduct our everyday life, then we will certainly understand the futility of: "Neither do men light a candle and put it under a bushel," rather than " but on a candlestick, and it giveth light unto all that are in the house." (Matthew 5:15). America was founded as a Christian nation by Christians, however, this never did mean, nor does it mean presently, that the only religion permitted in America must be Christian or offshoots of Christianity, as the Constitution clearly states and our history of plurality has clearly shown that all Americans are entitled to the free exercise of their religious or irreligious beliefs. In fact, in America, the Constitution makes it clear in Article VI that: "…no religious Test shall ever be required as a Qualification to any Office or public Trust…"
Today, modern man has reasoned itself into the cardinal error, of believing that through their mind and through their intelligence they now know all, see all, and are all, and thereby their government has no need for the interference and the inconvenience of belief in any sort of God. The belief or disbelief in God or voluntary service to any particular religion is a free thinking man's prerogative, however, to preclude others from their own beliefs, or to actively close the door on the free exercise of worship by governmental decree, is an abomination to this Constitution and thereby to this country and to which it stands.