It can be from anyone as long as they were a head of state and/or head of government (we must make allowance for our British cousin's archaic system ) It must also be one single sentence. Mine is from Barack Obama "We uh... We tortured some folks."
"Too many good docs are getting out of the business. Too many OB-GYNs aren't able to practice their love with women all across this country." —President George W. Bush, Sept. 6, 2004
"For seven and a half years I've worked alongside President Reagan. We've had triumphs. Made some mistakes. We've had some sex...uh...setbacks." —President George H.W. Bush, in 1988
"Gentlemen, let's get this thing straight, once and for all. The policeman is not here to create disorder. The policeman is here to preserve disorder." ~ Richard J. Daley 1968
"Ich bin ein Berliner!" —John F. Kennedy, June 26, 1963 Claimed by some to translate as "I am a jelly-filled donut!" Ich bin ein Berliner - Wikipedia
"If civilization is to survive, we must cultivate the science of human relationships - the ability of all peoples, of all kinds, to live together, in the same world at peace." Liberal poster boy who locked up 100s of 1000s Americans without due process
there was just a story about this on NPR. Apparently California is looking to issue an apology for its role. Cold comfort I'm sure.
I've posted this elsewhere on this site, but here it is again because it qualifies. "I do not like broccoli! I didn't even like it when I was a little kid and my mother made me eat it! And I'm the President of the United States and I'm not going to eat any more broccoli!" -George Bush