Why was under God put into Pledge of Allegiance in 1953?

The phrase "under God" was added to the Pledge of Allegiance in 1954, not 1953, as part of a campaign to emphasize the United States' commitment to religious faith during the Cold War. This change was influenced by the desire to differentiate the U.S. from the atheistic Soviet Union and to promote a sense of national unity and moral values. The addition was championed by various religious and civic groups, culminating in President Dwight D. Eisenhower signing the bill into law.