Question

when the president takes the oath of office, he swears to uphold the constitution by establishing justice, ensuring domestic traquality, provide for common defense, promote the general wealfare and??

Answer 1

Preamble to the constitution may be the answer?
"We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity"
 not 100% sure on that but it's all I can think of here and it makes sense.