Oath of office of the president of the United States

The oath of office of the president of the United States is an oath or affirmation required by the United States Constitution before the president of the United States begins the execution of the office.

Oath

 * I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States.

Quotes about

 * My fellow Americans, the oath I have sworn before you today, like the one recited by others who serve in this Capitol, was an oath to God and country, not party or faction. And we must faithfully execute that pledge during the duration of our service. But the words I spoke today are not so different from the oath that is taken each time a soldier signs up for duty or an immigrant realizes her dream. My oath is not so different from the pledge we all make to the flag that waves above and that fills our hearts with pride.
 * Barack Obama, Second Inaugural Address, January 20, 2013,
 * The oath of office I take today is an oath of allegiance to all Americans. For many decades, we've enriched foreign industry at the expense of American industry, subsidized the armies of other countries while allowing for the very sad depletion of our military. We've defended other nations' borders while refusing to defend our own and spent trillions and trillions of dollars overseas while America's infrastructure has fallen into disrepair and decay. We've made other countries rich while the wealth, strength, and confidence of our country has dissipated over the horizon. One by one, the factories shuttered and left our shores, with not even a thought about the millions and millions of American workers that were left behind. The wealth of our middle class has been ripped from their homes and then redistributed all across the world. But that is the past. And now we are looking only to the future. We, assembled here today, are issuing a new decree to be heard in every city, in every foreign capital, and in every hall of power. From this day forward, a new vision will govern our land. From this day forward, it's going to be only America first. America first. Every decision on trade, on taxes, on immigration, on foreign affairs, will be made to benefit American workers and American families.
 * Donald Trump, Inaugural Address; January 20, 2017