Alex does have a valid point....

"Reasons have been already given to induce a supposition that the State governments will too naturally be prone to a rivalship with that of the Union, the foundation of which will be the love of power; and that in any contest between the federal head and one of its members the people will be most apt to unite with their local government. If, in addition to this immense advantage, the ambition of the members should be stimulated by the separate and independent possession of military forces, it would afford too strong a temptation and too great a facility to them to make enterprises upon, and finally to subvert, the constitutional authority of the Union. On the other hand, the liberty of the people would be less safe in this state of things than in that which left the national forces in the hands of the national government. As far as an army may be considered as a dangerous weapon of power, it had better be in those hands of which the people are most likely to be jealous than in those of which they are least likely to be jealous. For it is a truth, which the experience of ages has attested, that the people are always most in danger when the means of injuring their rights are in the possession of those of whom they entertain the least suspicion."
- Alexander Hamilton, Federalist No. 25