The original Pledge of Allegiance, written in 1892 by Francis Bellamy, was meant as an expression of patriotism and was adopted by many public schools in the United States in order to instill national pride. The pledge read:
"I pledge allegiance to my flag and the republic for which it stands, one nation indivisible, with liberty and justice for all."
In 1954, however, at the start of the Cold War, Congress introduced "under God" into the Pledge. This act was primarily a response to the era's fear of "godless Communism".
To include "Under God" in the Pledge of Allegiance, the recitation becomes a profession of religious belief and thus constitutionally unsuitable for recitation in public schools.
This is a petition for "One nation, indivisible, with liberty and justice for all."