The Pledge of Allegiance to the United States flag is an oath of loyalty to the nation of the United States of America. It is often recited at public events. US Congressional sessions open with a recitation of the Pledge.
The current Pledge of Allegiance reads:
I pledge allegiance to the flag of the United States of America, and to the Republic for which it stands: one Nation under God, indivisible, with Liberty and Justice for all.