Almost nobody uses the U.S. Constitution as a model—not even Americans. […] According to researchers who analyzed all 729 constitutions adopted between 1946 and 2006, the U.S. Constitution is rarely used as a model. What’s more, “the American example is being rejected to an even greater extent by America’s allies than by the global community at large,” write David Law of Washington University and Mila Versteeg of the University of Virginia.

–Other fun fax from this post: apparently Thomas Jefferson thought the US constitution should be rewritten every 20 years.