I just read a great article that summarizes why the words "under god" should be removed from the Pledge of Allegiance. And it's not based on the points you might think. Read on_
The United States' arguement in this case is essentially that the words 'under god' are meaningless, and do not refer to a particular god, set of beliefs, or ideals. This author argues that this cheapens the words, though, and may even break a commandment.
In a brief submitted by 32 Christian and Jewish clergy, they assert that "if the briefs of the school district and the United States are to be taken seriously," (that is, if the words in the Pledge do not allude to God), "then every day they ask schoolchildren to violate [the] commandment" that "Thou shalt not take the Name of the Lord in vain."
I'll leave you with this comment from the author_ "The argument that a reference to God is not a reference to God is a sign that American religion is forgetting its reasons. The need of so many American believers to have government endorse their belief is thoroughly abject. How strong, and how wise, is a faith that needs to see God's name wherever it looks?"