No doubt, because there were all those Christians, Jews, and Muslims that founded this country. It could mean any one of those gods.
Actually, the country was founded by people of all races, religions, and practices, but that's a whole different discussion.
The Quakers were probably the most successful of the first British to successfully colonize the new world. They were in fact Christians, however the path Christianity took afterward is an abomination in their eyes.
They were extremely progressive. They were against slavery. They were for women and gay rights. They were pretty incredible considering the times. Their image of God wasn't remotely similar to anything modern day mainstream Christians believe. They saw God as a spirit who resides in the hearts of everyone giving them guidance and strength. Hell, their religion isn't very similar either. They believed in making peace with those of other religions and beliefs. They made peace with the Native Americans. Some of you might remember a little American holiday we have here called Thanks Giving. The Quakers were peaceful and tolerant.
Then you have the Puritans. They were some real cock suckers. They fled Great Brittan after the Catholics tore them a new asshole by ejecting them from the Church of England and calling the dissenters. Not long after they got on a boat to come here looking for religious freedom. The only problem was they only meant freedom for themselves, and expected all of society to bow to their beliefs. They wanted the church to control every facet of society. The Puritans believed in a harsh, judgmental God.
They believed in the hierarchy among men as divine order. That means domination of man over woman, parents of children, and masters over slaves. They did not believe in religious toleration, which was pretty fucking hypocritical considering their circumstances for being here. Sadly, this is what most resembles modern day mainstream conservative Christianity.
Now, here is some real funny irony. The puritans changed over time morphing into the modern day liberal progressive christian. They realized that strict control of religious beliefs by the government was a bad idea. They opted for freedom and liberty over government sanctioned spiritual beliefs. This was the beginnings of the separation of church and state, and an opinion that was a complete 180 from the beliefs of the original puritans that got off the boat.
This is only two of the many different groups that colonized the states. They had completely different views on almost everything, and the puritans completely changed they beliefs on how religion should play a part in society. Calling them both Christians is an insult to both of them. Here you have one religion, but two completely different meanings behind "In God we trust". There were many other Christian denominations that settled here who also had completely different beliefs in respect to the nature of God and God's relationship to Christ.
That was the easiest way I could summarize the point, and this is directed towards people who boohoo about how Christians founded the country, and now don't have any rights. "In God we Trust" doesn't mean a fucking thing. It means something different to everyone. It doesn't validate your dumb fucking beliefs that Christians are untitled to moral superiority. It doesn't mean your retard traditions of Santa Clause and Merry Christmas should be government sanctioned.
You can say Merry Christmas to anyone you want, as long as you don't work for the government and/or for a private company that has decided to tell you that you can't. The freedom to practice your own brew of Christianity is protected by the same laws that keep religion out of the government. That's the trade off. That is the price you pay to keep the government pure of religious control. If you don't like, find another job. Quit your cashier job at Walmart if you don't like it. I get to say Merry Christmas all I want at my job. If you believe that Christianity should dictate our laws and practices, you are going against the Christians who founded the country. You are acting like spoiled brats, because you aren't getting your way.
Most of the people who are angry about this stupid shit are angry at the wrong people. You should be angry at your employer. They are the ones who decided that it is more profitable for them to remain neutral in a culturally diverse society.
Man, I could really go on and on about this, but this post, much like Christmas, as become a beast that I can't feed.
Merry god damn Christmas, and bah fucking humbug!