I thought the national motto was "e plurbus unum"?
Yes and no.
On July 30, 1956 a law was passed stating that "the national motto of the United States is hereby declared to be 'In God we trust'." (70 Stat. 732. 36 U.S. Code 186). The House Judiciary Committee recognized that the phrase E Pluribus Unum had also received wide usage in the United States, and the joint resolution did not repeal or prohibit its use as a national motto. In 1963 the Department of State took the following position: "'In God we trust'" is the motto of the United States. It seems to the Department, nevertheless, that there is ample basis both in history and I law for calling 'E Pluribus Unum' a motto of the United States." The Congress has used both.