Comment: Lew makes a great point

about decentralization. He also spoke about the nullification crisis when SC nullified the Tariff of Abominations under Adams/Jackson. Though Jefferson was philosophically against the centralization of power, Calhoun of SC noted that though the founders, like Jefferson, believed the states would jealously guard their powers from central government usurpation, the reality was states gladly surrendered them if they believed do so would give them an advantage over other states. State nullification and - ultimately - peaceful secession are necessary powers to stop the exploitation of the minority by the majority. The key is government has to be by consent and that means the ability to peacefully withdraw it to prevent a minority becoming the perpetual slave of the majority.