The Atlantic has this lengthy essay by Alex Seitz-Wald on why the U.S. Constitution is outmoded. The article mentions that among the several hundred national constitutions that have been written in the last one hundred years, almost none of them copied the U.S. model. The essay also points out that most of the countries that did imitate the U.S. Constitution were in Latin America and during the years they had such constitutions, they suffered from instability. Thanks to How Appealing for the link. Alex Seitz-Wald is a political correspondent for The National Journal.