The costitution
Yes. All elected officials and serviceman must pledge to defend and protect the Constitution.
I do solemnly swear 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.
The pledge that the United States President Rutherford Hayes made was not to seek a re election.
FDR
thedore rossevelt lll
I pledge my loyalty to the president and nation of kenya. my readiness and duty to defend,the flag of our nation. Haraambee x 4
preserve, protect, and defend the Constitution of the United States
Korean War
the chief justice of supreme court
It was the Sussex Pledge signed in 1916. It was an agreement between the U.S. and Germany, to protect merchant ships from German U-boats.
James K. Polk
No, he never did. He says the pledge of allegiance the way it has been since 1954. However, it should be noted that when the pledge was originally written in the 1890s, it did not have the words "under God." That phrase was inserted during the McCarthy era, to show that America was different from the Soviet Union-- we believed in God, and they did not. That said, contrary to many internet myths, President Obama has never disrespected the flag, has never refused to say the pledge, and always says it correctly.