Examples of insuring domestic tranquility are The Patriotic Act initiation and World War II imprisonment of Americans of Japanese origin. The Patriotic Act was initiated in 2001 after the September 11 terrorist attacks.
The phrase, "insuring domestic tranquility" is used in the Preamble of the United States Federal Constitution. It refers to ways of preserving peace among or within the U.S. communities.
Some positive examples of insuring domestic tranquility are President John F. Kennedy and his administration's enforcement of civil rights and the Civil War. In spite of the U.S. Supreme Court's ruling that public school racial segregation was not constitutional, some public schools did not follow the ruling. Kennedy signed the Executive Order 10925 and 11063 for enforcing civil rights.