Change the country's official motto from "In God We Trust" to "E Pluribus Unum", the original, unofficial motto.

E Pluribus Unum (Latin, "Out of Many, One"), adopted by an act of Congress in 1782, became the de facto motto of the United States, though it was never codified by law, which would have made it official. In 1956, it was replaced by, "In God We Trust", which became the official motto of the United States of America. As the United States is not a Christian nation, we petition the Obama administration to both revert the motto to "E Pluribus Unum" and establish it as the official motto of these United States.
"E Pluribus Unum" better describes the unity of these fifty states than does "In God We Trust", especially with the marked rise in the atheist population and the considerable population that believes in a deity other than Yahweh.