Originally it stated,"I pledge allegiance to my Flag and the Republic for which it stands, one nation, indivisible, with liberty and justice for all"
The words "the Flag of the United States of America" was added.
Lillian and William Gobitas didn't salute the flag because they are children of Jehovah's Witnesses. In result of that act, they got expelled from the public schools of Minersville, Pennsylvania. The Court ruled that everybody must salute the flag because it was an important symbol of national unity.
The West Virginia State Board of Education requires all students to salute the flag during all activities in all public schools. Refusal to salute the flag, will result in in "insubordination" and is punishable by expulsion and charges of delinuency.
In response to Communist threat times, President Eisenhower pushed Congress to add the words, "under God" which is the 31-word pledge that we still say today.
The court, by a 5-2 ruling, struck down New York State's law requiring school officials to open the school day with prayer. This case was one of the first in a series of cases in which a variety of religious activities were found to violate the Establishment Clause.