Why did james madison believe that a system of federalism based on voluntary compliance would always fail?

James Madison believed that a system of federalism based on voluntary compliance would always fail because of the following reasons:

-Each state legislature contained "courtiers of popularity" who would actively oppose particular policies;

-Experience proved that states would never uniformly comply with national requests;

-Doubts about each other's commitment to policies would clog the federal system.

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aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on