Well, good Heavens. What hasnt' Uncle Joe Plagiarized?
Since 1801 the motto of the London Stock Exchange has been “dictum meum pactum” which is Latin for “My word is my bond”. The American actor Melvyn Douglas who died in 1981 said “Your word is your bond”.
It appears that Michelle did some plagiarism of her own and if you believe that then Melania hijacked a thief. This old saw has been around for 200 plus years.
It only took about 5 minutes to find these two examples and the actor passed away 27 years before Michelle gave her speech in 2008.