June 14, 1956: President Eisenhower signed a congressional resolution which added the words "under God" to the
The Pledge of Allegiance. The last phrase now reads: '...one nation, under God, indivisible, with liberty and justice for all.' Because of the words “under God,” many regard the Pledge of Allegiance not simply as an expression of patriotism, but also as an expression of religious piety. Furthermore, it has been used by many as evidence that this is a religious nation; not simply in the sense that most people are religious, but rather than the government itself is founded upon religious (typically Christian) principles.
Pledge of Allegiance, Under Gods:
• Pledge of Allegiance & God
• Politicization of the Pledge of Allegiance
• Divisiveness of the Pledge of Allegiance
• Newdow vs. U.S. Congress: Summary, Analysis
• Jehovah's Witnesses & the Pledge of Allegiance: History
• Jehovah's Witnesses & the Pledge of Allegiance: Aftermath
The phrase “under god” was added offically in 1956, but was in use long before that. Don’t take my word for it, look it up.
The important question is how long it’s had official status.