The Framers of the Constitution crafted a complex network of provisions dealing with the militia. They believed that there should be a national army, but that resources and politics dictated that the militia would provide the bulk of the forces needed to defend the country. Although they were sensitive to the fear of a standing army and the political concerns of the states, there was one principle on which they agreed: when the states' militias were needed to defend the country, the President, and not the governors, would be in charge. The phrasing of the President's power changed over the months in Philadelphia, but the exclusivity of the President's power was never questioned. The most significant change came from Roger Sherman, who moved the addition "and of the Militia of the several States, when called into the actual service of the US." This assured that the President could not take the militia away from the states except when properly called forth by Congress under Article I, Section 8, Clause 15.