President Ronald Reagan President Ronald Reagan

President Obama walks from the White House to Marine One on Friday. In an interview Thursday with NBC News, he apologized for breaking a promise regarding the Affordable Care Act. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

U.S. President Ronald Reagan and British Prime Minister Margaret Thatcher in 1987. AFP/Getty Images hide caption

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AFP/Getty Images